Question

(vi) 4(x - y)² - 12(x - y) +9​

Answer 1

Answer:

4 (x-y)^2 -12 (x - y)+9

4x^2 -4y^2 - 12x -12y +9

4x^2 - 12y - 4y^2 - 12x + 9

4(x^2-3y) -4(y^2 - 3x)+9