Factor 49x^2-25y^2

$49 x^{2} - 25 y^{2}$

Step 1

Rewrite $49 x^{2}$ as ${(7 x)}^{2}$ .

${(7 x)}^{2} - 25 y^{2}$

Step 2

Rewrite $25 y^{2}$ as ${(5 y)}^{2}$ .

${(7 x)}^{2} - {(5 y)}^{2}$

Step 3

Since both terms are perfect squares, factor using the difference of squares formula, $a^{2} - b^{2} = (a + b) (a - b)$ where $a = 7 x$ and $b = 5 y$ .

$(7 x + 5 y) (7 x - (5 y))$

Step 4

Multiply $5$ by $- 1$ .

$(7 x + 5 y) (7 x - 5 y)$

Factor 49x^2-25y^2

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