Question

Q.1. Use a suitable identity to get each of the
following products.
(a) (x + 3)(x + 3)​

Answer 1

Answer:

(x+3)(x+3)

x(x+3) +3(x+3)

x^2+3x+3x+9

x^2+6x+9

Answer 2

(x + 3)(x + 3) = (x + 3)²

Using identity=> (a+b)²= a²+b²+2ab

(x + 3)²

=(x)²+(3)²+2(x)(3)

= x²+9+6x

= x²+6x+9