Basic Math Examples

${(a^{2} + b^{2} - c^{2})}^{2} - 9 c^{2} y^{2}$

Step 1

Rewrite $9 c^{2} y^{2}$ as ${(3 c y)}^{2}$ .

${(a^{2} + b^{2} - c^{2})}^{2} - {(3 c y)}^{2}$

Step 2

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = a^{2} + b^{2} - c^{2}$ and $b = 3 c y$ .

$(a^{2} + b^{2} - c^{2} + 3 c y) (a^{2} + b^{2} - c^{2} - (3 c y))$

Step 3

Simplify.

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Step 3.1

Multiply $3$ by $- 1$ .

$(a^{2} + b^{2} - c^{2} + 3 c y) (a^{2} + b^{2} - c^{2} - 3 (c y))$

Step 3.2

Remove parentheses.

$(a^{2} + b^{2} - c^{2} + 3 c y) (a^{2} + b^{2} - c^{2} - 3 c y)$