Question

Factorise (a+b)² -11a+b -42

Answer 1

Answer:

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

Step-by-step explanation:

Let a+b be x

substituting x in terms of a+b

Then,it becomes

x²-11x-42

Now,factorizing x²-11x-42

It becomes,

(x-14)(x+3)

Now again substitute a+b in terms of x

Now it becomes (a+b-14)(a+b+3)