Question

EXERCISE - 2.5
1. Use suitable identities to
(i) (x + 5) (x + 2)​

Answer 1

Answer:

(x+a) (x+b)

here a= 5, b= 2

therefore, (x+a) (x+b) = x²+a+b*x + ab

= (x+5) (x+2) = x²+ 5+2*x + 5*2

= x²+ 7x + 10