Question

factorise 25x square - 16y square​

Answer 1

Answer:

(5x + 4y)(5x - 4y)

Step-by-step explanation:

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