Question

Use the identity (x + a)(x + b) = x2 + (a + b)x + ab to find the following products.

a) (p + 10)(p + 11)

b) (9x – 5)(9x – 1)

c) (5y + 2x)(3y + 2x)

d) (9 + 2a2)(5 + 2a2)

Answer 1

1) (p+10)(p+11)
> p^2 + (10+11)p + 10*11
> p^2 + 21p + 110

refer the attachment