Question

factories the algebraic expression by using suitable identity(3p-4q)²-81a²

Answer 1

problem is solved in picture plzz check out

Answer 2

Answer:

(3p-4q)²-81a²

the given expression can be writtten as

(3p-4q)²-(9a)²

using identity a^2 - b^2 = (a+b)(a-b) , we get

(3p-4q+9a)(3p-4q-9a)