Question

factorise 25x^4 Y^4 - 1

Answer 1

Answer:

Step-by-step explanation:

25x^4 y^4 - 1 = (5x^2y^2)^2 - 1

(5x^2y^2 + 1)(5x^2y^2-1)

Answer 2

25x^4y^4-1

=(5x^2y^2)^2- (1)^2

=(5x^2y^2 + 1)(5x^2 y^2 -1)