Question

Solve it. 2(x+y)²-9(x+y)-5

Answer 1

2 (x + y)² - 9 (x + y) - 5

= 2 (x + y)² - (10 - 1) (x + y) - 5

= 2 (x + y)² - 10 (x + y) + (x + y) - 5

= 2 (x + y) (x + y - 5) + 1 (x + y - 5)

= (x + y - 5) {2 (x + y) + 1)

= (x + y - 5) (2x + 2y + 1),

I hope this helps you.