Algebra Examples

$y - 6 = x^{2} - 3 x$ $x + 2 y = 2$

Step 1

Add $6$ to both sides of the equation.

$y = x^{2} - 3 x + 6$

$x + 2 y = 2$

Step 2

Replace all occurrences of $y$ with $x^{2} - 3 x + 6$ in each equation.

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Step 2.1

Replace all occurrences of $y$ in $x + 2 y = 2$ with $x^{2} - 3 x + 6$ .

$x + 2 (x^{2} - 3 x + 6) = 2$

$y = x^{2} - 3 x + 6$

Step 2.2

Simplify the left side.

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Step 2.2.1

Simplify $x + 2 (x^{2} - 3 x + 6)$ .

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Step 2.2.1.1

Simplify each term.

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Step 2.2.1.1.1

Apply the distributive property.

$x + 2 x^{2} + 2 (- 3 x) + 2 \cdot 6 = 2$

$y = x^{2} - 3 x + 6$

Step 2.2.1.1.2

Simplify.

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Step 2.2.1.1.2.1

Multiply $- 3$ by $2$ .

$x + 2 x^{2} - 6 x + 2 \cdot 6 = 2$

$y = x^{2} - 3 x + 6$

Step 2.2.1.1.2.2

Multiply $2$ by $6$ .

$x + 2 x^{2} - 6 x + 12 = 2$

$y = x^{2} - 3 x + 6$

$x + 2 x^{2} - 6 x + 12 = 2$

$y = x^{2} - 3 x + 6$

$x + 2 x^{2} - 6 x + 12 = 2$

$y = x^{2} - 3 x + 6$

Step 2.2.1.2

Subtract $6 x$ from $x$ .

$2 x^{2} - 5 x + 12 = 2$

$y = x^{2} - 3 x + 6$

$2 x^{2} - 5 x + 12 = 2$

$y = x^{2} - 3 x + 6$

$2 x^{2} - 5 x + 12 = 2$

$y = x^{2} - 3 x + 6$

$2 x^{2} - 5 x + 12 = 2$

$y = x^{2} - 3 x + 6$

Step 3

Solve for $x$ in $2 x^{2} - 5 x + 12 = 2$ .

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Step 3.1

Move all terms to the left side of the equation and simplify.

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Step 3.1.1

Subtract $2$ from both sides of the equation.

$2 x^{2} - 5 x + 12 - 2 = 0$

$y = x^{2} - 3 x + 6$

Step 3.1.2

Subtract $2$ from $12$ .

$2 x^{2} - 5 x + 10 = 0$

$y = x^{2} - 3 x + 6$

$2 x^{2} - 5 x + 10 = 0$

$y = x^{2} - 3 x + 6$

Step 3.2

Use the quadratic formula to find the solutions.

$\frac{- b \pm \sqrt{b^{2} - 4 (a c)}}{2 a}$

$y = x^{2} - 3 x + 6$

Step 3.3

Substitute the values $a = 2$ , $b = - 5$ , and $c = 10$ into the quadratic formula and solve for $x$ .

$\frac{5 \pm \sqrt{{(- 5)}^{2} - 4 \cdot (2 \cdot 10)}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4

Simplify.

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Step 3.4.1

Simplify the numerator.

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Step 3.4.1.1

Raise $- 5$ to the power of $2$ .

$x = \frac{5 \pm \sqrt{25 - 4 \cdot 2 \cdot 10}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4.1.2

Multiply $- 4 \cdot 2 \cdot 10$ .

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Step 3.4.1.2.1

Multiply $- 4$ by $2$ .

$x = \frac{5 \pm \sqrt{25 - 8 \cdot 10}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4.1.2.2

Multiply $- 8$ by $10$ .

$x = \frac{5 \pm \sqrt{25 - 80}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 \pm \sqrt{25 - 80}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4.1.3

Subtract $80$ from $25$ .

$x = \frac{5 \pm \sqrt{- 55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4.1.4

Rewrite $- 55$ as $- 1 (55)$ .

$x = \frac{5 \pm \sqrt{- 1 \cdot 55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4.1.5

Rewrite $\sqrt{- 1 (55)}$ as $\sqrt{- 1} \cdot \sqrt{55}$ .

$x = \frac{5 \pm \sqrt{- 1} \cdot \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4.1.6

Rewrite $\sqrt{- 1}$ as $i$ .

$x = \frac{5 \pm i \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 \pm i \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.4.2

Multiply $2$ by $2$ .

$x = \frac{5 \pm i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 \pm i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

Step 3.5

Simplify the expression to solve for the $+$ portion of the $\pm$ .

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Step 3.5.1

Simplify the numerator.

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Step 3.5.1.1

Raise $- 5$ to the power of $2$ .

$x = \frac{5 \pm \sqrt{25 - 4 \cdot 2 \cdot 10}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.5.1.2

Multiply $- 4 \cdot 2 \cdot 10$ .

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Step 3.5.1.2.1

Multiply $- 4$ by $2$ .

$x = \frac{5 \pm \sqrt{25 - 8 \cdot 10}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.5.1.2.2

Multiply $- 8$ by $10$ .

$x = \frac{5 \pm \sqrt{25 - 80}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 \pm \sqrt{25 - 80}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.5.1.3

Subtract $80$ from $25$ .

$x = \frac{5 \pm \sqrt{- 55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.5.1.4

Rewrite $- 55$ as $- 1 (55)$ .

$x = \frac{5 \pm \sqrt{- 1 \cdot 55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.5.1.5

Rewrite $\sqrt{- 1 (55)}$ as $\sqrt{- 1} \cdot \sqrt{55}$ .

$x = \frac{5 \pm \sqrt{- 1} \cdot \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.5.1.6

Rewrite $\sqrt{- 1}$ as $i$ .

$x = \frac{5 \pm i \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 \pm i \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.5.2

Multiply $2$ by $2$ .

$x = \frac{5 \pm i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

Step 3.5.3

Change the $\pm$ to $+$ .

$x = \frac{5 + i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

Step 3.6

Simplify the expression to solve for the $-$ portion of the $\pm$ .

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Step 3.6.1

Simplify the numerator.

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Step 3.6.1.1

Raise $- 5$ to the power of $2$ .

$x = \frac{5 \pm \sqrt{25 - 4 \cdot 2 \cdot 10}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.6.1.2

Multiply $- 4 \cdot 2 \cdot 10$ .

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Step 3.6.1.2.1

Multiply $- 4$ by $2$ .

$x = \frac{5 \pm \sqrt{25 - 8 \cdot 10}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.6.1.2.2

Multiply $- 8$ by $10$ .

$x = \frac{5 \pm \sqrt{25 - 80}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 \pm \sqrt{25 - 80}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.6.1.3

Subtract $80$ from $25$ .

$x = \frac{5 \pm \sqrt{- 55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.6.1.4

Rewrite $- 55$ as $- 1 (55)$ .

$x = \frac{5 \pm \sqrt{- 1 \cdot 55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.6.1.5

Rewrite $\sqrt{- 1 (55)}$ as $\sqrt{- 1} \cdot \sqrt{55}$ .

$x = \frac{5 \pm \sqrt{- 1} \cdot \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.6.1.6

Rewrite $\sqrt{- 1}$ as $i$ .

$x = \frac{5 \pm i \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 \pm i \sqrt{55}}{2 \cdot 2}$

$y = x^{2} - 3 x + 6$

Step 3.6.2

Multiply $2$ by $2$ .

$x = \frac{5 \pm i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

Step 3.6.3

Change the $\pm$ to $-$ .

$x = \frac{5 - i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

Step 3.7

The final answer is the combination of both solutions.

$x = \frac{5 + i \sqrt{55}}{4}, \frac{5 - i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

$x = \frac{5 + i \sqrt{55}}{4}, \frac{5 - i \sqrt{55}}{4}$

$y = x^{2} - 3 x + 6$

Step 4

Replace all occurrences of $x$ with $\frac{5 + i \sqrt{55}}{4}$ in each equation.

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Step 4.1

Replace all occurrences of $x$ in $y = x^{2} - 3 x + 6$ with $\frac{5 + i \sqrt{55}}{4}$ .

$y = {(\frac{5 + i \sqrt{55}}{4})}^{2} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2

Simplify the right side.

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Step 4.2.1

Simplify ${(\frac{5 + i \sqrt{55}}{4})}^{2} - 3 \frac{5 + i \sqrt{55}}{4} + 6$ .

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Step 4.2.1.1

Simplify each term.

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Step 4.2.1.1.1

Apply the product rule to $\frac{5 + i \sqrt{55}}{4}$ .

$y = \frac{{(5 + i \sqrt{55})}^{2}}{4^{2}} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.2

Raise $4$ to the power of $2$ .

$y = \frac{{(5 + i \sqrt{55})}^{2}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.3

Rewrite ${(5 + i \sqrt{55})}^{2}$ as $(5 + i \sqrt{55}) (5 + i \sqrt{55})$ .

$y = \frac{(5 + i \sqrt{55}) (5 + i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.4

Expand $(5 + i \sqrt{55}) (5 + i \sqrt{55})$ using the FOIL Method.

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Step 4.2.1.1.4.1

Apply the distributive property.

$y = \frac{5 (5 + i \sqrt{55}) + i \sqrt{55} (5 + i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.4.2

Apply the distributive property.

$y = \frac{5 \cdot 5 + 5 (i \sqrt{55}) + i \sqrt{55} (5 + i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.4.3

Apply the distributive property.

$y = \frac{5 \cdot 5 + 5 (i \sqrt{55}) + i \sqrt{55} \cdot 5 + i \sqrt{55} (i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{5 \cdot 5 + 5 (i \sqrt{55}) + i \sqrt{55} \cdot 5 + i \sqrt{55} (i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5

Simplify and combine like terms.

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Step 4.2.1.1.5.1

Simplify each term.

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Step 4.2.1.1.5.1.1

Multiply $5$ by $5$ .

$y = \frac{25 + 5 (i \sqrt{55}) + i \sqrt{55} \cdot 5 + i \sqrt{55} (i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.2

Move $5$ to the left of $i \sqrt{55}$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 \cdot (i \sqrt{55}) + i \sqrt{55} (i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3

Multiply $i \sqrt{55} (i \sqrt{55})$ .

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Step 4.2.1.1.5.1.3.1

Raise $i$ to the power of $1$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i i \sqrt{55} \sqrt{55}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3.2

Raise $i$ to the power of $1$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i i \sqrt{55} \sqrt{55}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3.3

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i^{1 + 1} \sqrt{55} \sqrt{55}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3.4

Add $1$ and $1$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i^{2} \sqrt{55} \sqrt{55}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3.5

Raise $\sqrt{55}$ to the power of $1$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i^{2} (\sqrt{55} \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3.6

Raise $\sqrt{55}$ to the power of $1$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i^{2} (\sqrt{55} \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3.7

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i^{2} {\sqrt{55}}^{1 + 1}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.3.8

Add $1$ and $1$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i^{2} {\sqrt{55}}^{2}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} + i^{2} {\sqrt{55}}^{2}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.4

Rewrite $i^{2}$ as $- 1$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 {\sqrt{55}}^{2}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.5

Rewrite ${\sqrt{55}}^{2}$ as $55$ .

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Step 4.2.1.1.5.1.5.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{55}$ as $55^{\frac{1}{2}}$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 {(55^{\frac{1}{2}})}^{2}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.5.2

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 \cdot 55^{\frac{1}{2} \cdot 2}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.5.3

Combine $\frac{1}{2}$ and $2$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 \cdot 55^{\frac{2}{2}}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.5.4

Cancel the common factor of $2$ .

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Step 4.2.1.1.5.1.5.4.1

Cancel the common factor.

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 \cdot 55^{\frac{2}{2}}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.5.4.2

Rewrite the expression.

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 \cdot 55}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 \cdot 55}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.5.5

Evaluate the exponent.

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 \cdot 55}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 1 \cdot 55}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.1.6

Multiply $- 1$ by $55$ .

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 55}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{25 + 5 i \sqrt{55} + 5 i \sqrt{55} - 55}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.2

Subtract $55$ from $25$ .

$y = \frac{5 i \sqrt{55} + 5 i \sqrt{55} - 30}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.5.3

Add $5 i \sqrt{55}$ and $5 i \sqrt{55}$ .

$y = \frac{10 i \sqrt{55} - 30}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{10 i \sqrt{55} - 30}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.6

Reorder $10 i \sqrt{55}$ and $- 30$ .

$y = \frac{- 30 + 10 i \sqrt{55}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.7

Cancel the common factor of $- 30 + 10 i \sqrt{55}$ and $16$ .

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Step 4.2.1.1.7.1

Factor $2$ out of $- 30$ .

$y = \frac{2 (- 15) + 10 i \sqrt{55}}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.7.2

Factor $2$ out of $10 i \sqrt{55}$ .

$y = \frac{2 (- 15) + 2 (5 i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.7.3

Factor $2$ out of $2 (- 15) + 2 (5 i \sqrt{55})$ .

$y = \frac{2 (- 15 + 5 i \sqrt{55})}{16} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.7.4

Cancel the common factors.

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Step 4.2.1.1.7.4.1

Factor $2$ out of $16$ .

$y = \frac{2 (- 15 + 5 i \sqrt{55})}{2 \cdot 8} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.7.4.2

Cancel the common factor.

$y = \frac{2 (- 15 + 5 i \sqrt{55})}{2 \cdot 8} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.7.4.3

Rewrite the expression.

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - 3 \frac{5 + i \sqrt{55}}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.8

Combine $- 3$ and $\frac{5 + i \sqrt{55}}{4}$ .

$y = \frac{- 15 + 5 i \sqrt{55}}{8} + \frac{- 3 (5 + i \sqrt{55})}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.1.9

Move the negative in front of the fraction.

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - \frac{3 (5 + i \sqrt{55})}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - \frac{3 (5 + i \sqrt{55})}{4} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.2

To write $- \frac{3 (5 + i \sqrt{55})}{4}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - \frac{3 (5 + i \sqrt{55})}{4} \cdot \frac{2}{2} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.3

Write each expression with a common denominator of $8$ , by multiplying each by an appropriate factor of $1$ .

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Step 4.2.1.3.1

Multiply $\frac{3 (5 + i \sqrt{55})}{4}$ by $\frac{2}{2}$ .

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - \frac{3 (5 + i \sqrt{55}) \cdot 2}{4 \cdot 2} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.3.2

Multiply $4$ by $2$ .

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - \frac{3 (5 + i \sqrt{55}) \cdot 2}{8} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{- 15 + 5 i \sqrt{55}}{8} - \frac{3 (5 + i \sqrt{55}) \cdot 2}{8} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.4

Combine the numerators over the common denominator.

$y = \frac{- 45 - i \sqrt{55}}{8} + 6$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.5

To write $6$ as a fraction with a common denominator, multiply by $\frac{8}{8}$ .

$y = \frac{- 45 - i \sqrt{55}}{8} + 6 \cdot \frac{8}{8}$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.6

Combine $6$ and $\frac{8}{8}$ .

$y = \frac{- 45 - i \sqrt{55}}{8} + \frac{6 \cdot 8}{8}$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 4.2.1.7

Combine the numerators over the common denominator.

$y = \frac{3 - i \sqrt{55}}{8}$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{3 - i \sqrt{55}}{8}$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{3 - i \sqrt{55}}{8}$

$x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{3 - i \sqrt{55}}{8}$

$x = \frac{5 + i \sqrt{55}}{4}$

Step 5

Replace all occurrences of $x$ with $\frac{5 - i \sqrt{55}}{4}$ in each equation.

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Step 5.1

Replace all occurrences of $x$ in $y = x^{2} - 3 x + 6$ with $\frac{5 - i \sqrt{55}}{4}$ .

$y = {(\frac{5 - i \sqrt{55}}{4})}^{2} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2

Simplify the right side.

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Step 5.2.1

Simplify ${(\frac{5 - i \sqrt{55}}{4})}^{2} - 3 \frac{5 - i \sqrt{55}}{4} + 6$ .

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Step 5.2.1.1

Simplify each term.

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Step 5.2.1.1.1

Apply the product rule to $\frac{5 - i \sqrt{55}}{4}$ .

$y = \frac{{(5 - i \sqrt{55})}^{2}}{4^{2}} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.2

Raise $4$ to the power of $2$ .

$y = \frac{{(5 - i \sqrt{55})}^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.3

Rewrite ${(5 - i \sqrt{55})}^{2}$ as $(5 - i \sqrt{55}) (5 - i \sqrt{55})$ .

$y = \frac{(5 - i \sqrt{55}) (5 - i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.4

Expand $(5 - i \sqrt{55}) (5 - i \sqrt{55})$ using the FOIL Method.

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Step 5.2.1.1.4.1

Apply the distributive property.

$y = \frac{5 (5 - i \sqrt{55}) - i \sqrt{55} (5 - i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.4.2

Apply the distributive property.

$y = \frac{5 \cdot 5 + 5 (- i \sqrt{55}) - i \sqrt{55} (5 - i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.4.3

Apply the distributive property.

$y = \frac{5 \cdot 5 + 5 (- i \sqrt{55}) - i \sqrt{55} \cdot 5 - i \sqrt{55} (- i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{5 \cdot 5 + 5 (- i \sqrt{55}) - i \sqrt{55} \cdot 5 - i \sqrt{55} (- i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5

Simplify and combine like terms.

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Step 5.2.1.1.5.1

Simplify each term.

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Step 5.2.1.1.5.1.1

Multiply $5$ by $5$ .

$y = \frac{25 + 5 (- i \sqrt{55}) - i \sqrt{55} \cdot 5 - i \sqrt{55} (- i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.2

Multiply $- 1$ by $5$ .

$y = \frac{25 - 5 (i \sqrt{55}) - i \sqrt{55} \cdot 5 - i \sqrt{55} (- i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.3

Multiply $5$ by $- 1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} - i \sqrt{55} (- i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4

Multiply $- i \sqrt{55} (- i \sqrt{55})$ .

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Step 5.2.1.1.5.1.4.1

Multiply $- 1$ by $- 1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 1 i \sqrt{55} (i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.2

Multiply $\sqrt{55}$ by $1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + \sqrt{55} i (i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.3

Raise $\sqrt{55}$ to the power of $1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + \sqrt{55} \sqrt{55} i i}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.4

Raise $\sqrt{55}$ to the power of $1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + \sqrt{55} \sqrt{55} i i}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.5

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {\sqrt{55}}^{1 + 1} i i}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.6

Add $1$ and $1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {\sqrt{55}}^{2} i i}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.7

Raise $i$ to the power of $1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {\sqrt{55}}^{2} (i i)}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.8

Raise $i$ to the power of $1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {\sqrt{55}}^{2} (i i)}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.9

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {\sqrt{55}}^{2} i^{1 + 1}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.4.10

Add $1$ and $1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {\sqrt{55}}^{2} i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {\sqrt{55}}^{2} i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.5

Rewrite ${\sqrt{55}}^{2}$ as $55$ .

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Step 5.2.1.1.5.1.5.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{55}$ as $55^{\frac{1}{2}}$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + {(55^{\frac{1}{2}})}^{2} i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.5.2

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55^{\frac{1}{2} \cdot 2} i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.5.3

Combine $\frac{1}{2}$ and $2$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55^{\frac{2}{2}} i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.5.4

Cancel the common factor of $2$ .

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Step 5.2.1.1.5.1.5.4.1

Cancel the common factor.

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55^{\frac{2}{2}} i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.5.4.2

Rewrite the expression.

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55 i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55 i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.5.5

Evaluate the exponent.

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55 i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55 i^{2}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.6

Rewrite $i^{2}$ as $- 1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} + 55 \cdot - 1}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.1.7

Multiply $55$ by $- 1$ .

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} - 55}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{25 - 5 i \sqrt{55} - 5 i \sqrt{55} - 55}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.2

Subtract $55$ from $25$ .

$y = \frac{- 5 i \sqrt{55} - 5 i \sqrt{55} - 30}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.5.3

Subtract $5 i \sqrt{55}$ from $- 5 i \sqrt{55}$ .

$y = \frac{- 10 i \sqrt{55} - 30}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{- 10 i \sqrt{55} - 30}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.6

Reorder $- 10 i \sqrt{55}$ and $- 30$ .

$y = \frac{- 30 - 10 i \sqrt{55}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.7

Cancel the common factor of $- 30 - 10 i \sqrt{55}$ and $16$ .

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Step 5.2.1.1.7.1

Factor $2$ out of $- 30$ .

$y = \frac{2 (- 15) - 10 i \sqrt{55}}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.7.2

Factor $2$ out of $- 10 i \sqrt{55}$ .

$y = \frac{2 (- 15) + 2 (- 5 i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.7.3

Factor $2$ out of $2 (- 15) + 2 (- 5 i \sqrt{55})$ .

$y = \frac{2 (- 15 - 5 i \sqrt{55})}{16} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.7.4

Cancel the common factors.

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Step 5.2.1.1.7.4.1

Factor $2$ out of $16$ .

$y = \frac{2 (- 15 - 5 i \sqrt{55})}{2 \cdot 8} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.7.4.2

Cancel the common factor.

$y = \frac{2 (- 15 - 5 i \sqrt{55})}{2 \cdot 8} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.7.4.3

Rewrite the expression.

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - 3 \frac{5 - i \sqrt{55}}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.8

Combine $- 3$ and $\frac{5 - i \sqrt{55}}{4}$ .

$y = \frac{- 15 - 5 i \sqrt{55}}{8} + \frac{- 3 (5 - i \sqrt{55})}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.1.9

Move the negative in front of the fraction.

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - \frac{3 (5 - i \sqrt{55})}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - \frac{3 (5 - i \sqrt{55})}{4} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.2

To write $- \frac{3 (5 - i \sqrt{55})}{4}$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - \frac{3 (5 - i \sqrt{55})}{4} \cdot \frac{2}{2} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.3

Write each expression with a common denominator of $8$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.2.1.3.1

Multiply $\frac{3 (5 - i \sqrt{55})}{4}$ by $\frac{2}{2}$ .

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - \frac{3 (5 - i \sqrt{55}) \cdot 2}{4 \cdot 2} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.3.2

Multiply $4$ by $2$ .

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - \frac{3 (5 - i \sqrt{55}) \cdot 2}{8} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{- 15 - 5 i \sqrt{55}}{8} - \frac{3 (5 - i \sqrt{55}) \cdot 2}{8} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.4

Combine the numerators over the common denominator.

$y = \frac{- 45 + i \sqrt{55}}{8} + 6$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.5

To write $6$ as a fraction with a common denominator, multiply by $\frac{8}{8}$ .

$y = \frac{- 45 + i \sqrt{55}}{8} + 6 \cdot \frac{8}{8}$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.6

Combine $6$ and $\frac{8}{8}$ .

$y = \frac{- 45 + i \sqrt{55}}{8} + \frac{6 \cdot 8}{8}$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 5.2.1.7

Combine the numerators over the common denominator.

$y = \frac{3 + i \sqrt{55}}{8}$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{3 + i \sqrt{55}}{8}$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{3 + i \sqrt{55}}{8}$

$x = \frac{5 - i \sqrt{55}}{4}$

$y = \frac{3 + i \sqrt{55}}{8}$

$x = \frac{5 - i \sqrt{55}}{4}$

Step 6

List all of the solutions.

$y = \frac{3 - i \sqrt{55}}{8}, x = \frac{5 + i \sqrt{55}}{4}$

$y = \frac{3 + i \sqrt{55}}{8}, x = \frac{5 - i \sqrt{55}}{4}$

Step 7