Question

Factorise :
7(x-2y)² - 25(x-2y)
+ 12​

Answer 1

We may write t=x-2y.

→ $7t^2-25t+12$

→ $(7t-4)(t-3)$ : I used the a.c. method here.

Now we can rewrite t=x-2y.

→ $(7t-4)(t-3)$

→ $(7x-14y-4)(x-2y-3)$

Answer 2

Answer:

hope it will help

Step-by-step explanation:

7(x-2y)² - 25(x-2y) + 12​

7(x-2y)² -21(x-2y) - 4(x-2y) +12

7(x-2y)(x-2y-3) -4(x-2y-3)

(x-2y-3) (7x-14y-4)