How do you factor the expression $16 x^{4} - 25 y^{2}$ $16x^4 - 25y^2$ ?

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Answer 1 · 2016-04-17T15:56:28

$a^{2} - b^{2} = (a + b) (a - b)$ $color(blue)(a^2-b^2=(a+b)(a-b))$

So, $16 x^{4} - 25 y^{2} = (4 x^{2} - 5 y) (4 x^{2} + 5 y)$ $16x^4-25y^2=(4x^2-5y)(4x^2+5y)$

How do you factor the expression 16x4−25y216x^4 - 25y^2?