Question

factroise (64a^2-144ab +81b^2) -25x^2

Answer 1

$\large{\mathtt{\underbrace{\pink{✠\:Required\:Answer\:✠}}}}$

(64a²-144ab+81b²) - 25x²

=> [(8a)² - 2(8a)(9b) + (9b)²] - (5x)²

=> (8a - 9b)² - (5x)²

Answer 2

Refer to attachment :D

You have to do only is to make the equation related to identity.

IDENTITY USED:

• A²+B²-2AB=(A-B)²
• A²-B²=(A+B)(A-B)