Question

(a+b)^2 - 11(a+b) - 42

Factorie it​

Answer 1

Step-by-step explanation:

=(a+b)^2 - 11(a+b) -42

=x^2-11x -42 , where x =(a+b)

= x^2 -14x+3x -42

=x(x-14)+3(x-14)

= (x-14)(x+3)

= (a+b-14)(a+b+3)