Question

24. Factorise 9(p - q)2 - 4 (2p+q)2
(1) – (7p - ) (p + 5q) (2) (7p-) (p + 5q)
(3) - /7p + q) (p + 5q) (4) (7p + q) (p - 59)​

Answer 1

Answer:

The solution for the first question is in the above picture.

Use formula : a²-b²=(a+b)(a-b)

I can't understand 2nd and 3red question.