Question

4(x - y)2 - 12(x - y) +9 factorise​

Answer 1

Answer:

Let x-y be s.

Therefore, the expression becomes

4s^{2} -12s+9

=(2s)^{2} - 2*2s*3+(3)^2

=(2s-3)^2

Substituting s as x-y (as mentioned above) we get:

[2(x-y)+3]^2

=(2x-2y+3)^2

=(2x-2y+3)^2

HOPE THIS MAKES UR DAY BETTER!!