Question

(2x-y)whole sq-11(2x-y)+28

Answer 1

Let (2x-y) be a
=a^2-11a+28
=a^2-7a-4a+28
=a(a-7)-4(a-7)
=(a-7)(a-4). {a=(2x-y)}
=(2x-y-7)(2x-y-4)