Algebra Examples

$y^{2} - x$ ; use $x = 7$ ; and $y = 7$

Step 1

Replace the variable $x$ with $7$ in the expression.

$y^{2} - (7)$

Step 2

Replace the variable $y$ with $7$ in the expression.

${(7)}^{2} - (7)$

Step 3

Simplify each term.

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Step 3.1

Raise $7$ to the power of $2$ .

$49 - (7)$

Step 3.2

Multiply $- 1$ by $7$ .

$49 - 7$

Step 4

Subtract $7$ from $49$ .

$42$