Question

25x^2 -(2x-3)^2
(factorize it pls)

Answer 1

Know an identity :

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

Also know that :

$25x^2=(5x)^2$

Apply the identity.

$(5x)^2-(2x-3)^2$

$=(5x+2x-3)(5x-2x+3)$

$=(7x-3)(3x+3)$

$=3(7x-3)(x+1)$

The answer is : $3(7x-3)(x+1)$.