Factorization of 4 (x + y) 2 + 25-20 (x + y)

Factorization of 4 (x + y) 2 + 25-20 (x + y)

4(x+y)2+25-20(x+y)
=[2(x+y)]²-2×2(x+y)×5+5²
=[(2(x+y)-5]²
=(2x+2y-5)²