Question

(x-2y)² - 5(x-2y) +6

Answer 1

Step-by-step explanation:

let x-2y=t

so t^2-5t+6=0

t^2-2t-3t+6=0

(t-2)(t-3) =0

now t=2 and t=3

hence x-2y=2 and x-2y=3