Algebra Examples

${(x - y)}^{3} + {(x - y)}^{3}$

Step 1

Simplify each term.

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Step 1.1

Use the Binomial Theorem.

$x^{3} + 3 x^{2} (- y) + 3 x {(- y)}^{2} + {(- y)}^{3} + {(x - y)}^{3}$

Step 1.2

Simplify each term.

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Step 1.2.1

Rewrite using the commutative property of multiplication.

$x^{3} + 3 \cdot - 1 x^{2} y + 3 x {(- y)}^{2} + {(- y)}^{3} + {(x - y)}^{3}$

Step 1.2.2

Multiply $3$ by $- 1$ .

$x^{3} - 3 x^{2} y + 3 x {(- y)}^{2} + {(- y)}^{3} + {(x - y)}^{3}$

Step 1.2.3

Apply the product rule to $- y$ .

$x^{3} - 3 x^{2} y + 3 x ({(- 1)}^{2} y^{2}) + {(- y)}^{3} + {(x - y)}^{3}$

Step 1.2.4

Rewrite using the commutative property of multiplication.

$x^{3} - 3 x^{2} y + 3 \cdot {(- 1)}^{2} x y^{2} + {(- y)}^{3} + {(x - y)}^{3}$

Step 1.2.5

Raise $- 1$ to the power of $2$ .

$x^{3} - 3 x^{2} y + 3 \cdot 1 x y^{2} + {(- y)}^{3} + {(x - y)}^{3}$

Step 1.2.6

Multiply $3$ by $1$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} + {(- y)}^{3} + {(x - y)}^{3}$

Step 1.2.7

Apply the product rule to $- y$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} + {(- 1)}^{3} y^{3} + {(x - y)}^{3}$

Step 1.2.8

Raise $- 1$ to the power of $3$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + {(x - y)}^{3}$

Step 1.3

Use the Binomial Theorem.

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} + 3 x^{2} (- y) + 3 x {(- y)}^{2} + {(- y)}^{3}$

Step 1.4

Simplify each term.

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Step 1.4.1

Rewrite using the commutative property of multiplication.

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} + 3 \cdot - 1 x^{2} y + 3 x {(- y)}^{2} + {(- y)}^{3}$

Step 1.4.2

Multiply $3$ by $- 1$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} - 3 x^{2} y + 3 x {(- y)}^{2} + {(- y)}^{3}$

Step 1.4.3

Apply the product rule to $- y$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} - 3 x^{2} y + 3 x ({(- 1)}^{2} y^{2}) + {(- y)}^{3}$

Step 1.4.4

Rewrite using the commutative property of multiplication.

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} - 3 x^{2} y + 3 \cdot {(- 1)}^{2} x y^{2} + {(- y)}^{3}$

Step 1.4.5

Raise $- 1$ to the power of $2$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} - 3 x^{2} y + 3 \cdot 1 x y^{2} + {(- y)}^{3}$

Step 1.4.6

Multiply $3$ by $1$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} - 3 x^{2} y + 3 x y^{2} + {(- y)}^{3}$

Step 1.4.7

Apply the product rule to $- y$ .

$x^{3} - 3 x^{2} y + 3 x y^{2} - y^{3} + x^{3} - 3 x^{2} y + 3 x y^{2} + {(- 1)}^{3} y^{3}$

Step 1.4.8

Raise $- 1$ to the power of $3$ .

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

Step 2

Simplify by adding terms.

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Step 2.1

Add $x^{3}$ and $x^{3}$ .

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

Step 2.2

Subtract $3 x^{2} y$ from $- 3 x^{2} y$ .

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

Step 2.3

Add $3 x y^{2}$ and $3 x y^{2}$ .

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

Step 2.4

Subtract $y^{3}$ from $- y^{3}$ .

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