Question

Hi really need some help!

Answer 1

Answer: $(5x+12)(5x-12)$

Step-by-step explanation:

$25x^2-144$

What we have here is;

$a^2-b^2$

This is as simple as extracting the square root of both terms and multiply them by themselves, one being positive and the other negative as following;

$a^2-b^2=(a+b)(a-b)$

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The square root of 25 is 5, $x^2$ is x, and 144 is 12

$25x^2-144=(5x+12)(5x-12)$