Question 329020
4x2+4xy+y2-8x-4y+3
..
(2x+y)^2-4(2x+y) +3
..
let (2x+y)=a
a^2-4a+3
a^2-3a-a+3
a(a-3)-1(a-3)
(a-1)(a-3)
replace the value of a with 2x+y
(2x+y-1)(2x+y-3)