Question

pls answer with explanation​

Answer 1

Answer:

Step-by-step explanation:

Identity to be used = x^2 - y^2 = (x+y)(x-y)

now According to question

15(y+3)(y^2 -16) = 15(y+3)(y+4)(y-4) ----using identity

5(y^2 - y -12) = 5(y+3)(y-4) ---------by factorization

now forming the expression we get

$\frac{15(y+3)(y+4)(y-4) }{5(y+3)(y-4)}$ x 3(y+4)

cancelling we get

9(y+4)^2

CHEERS MATE, PLEASE MARK BRAINLIEST