Question

factorise 25 p2-36q2

Answer 1

25p^2 - 36q^2

= (5p)^2 - (6q)^2

= ( 5p + 6q) (5p - 6q)

[ a^2 - b^2 = (a+ b) (a-b)]

Answer 2

25p^2 - 36q^2
(5p)^2 - (6q) ^2
Using identity
(5p-6q)(5p+6q)