Question

Expand (x+2) cube using suitable identity ​

Answer 1

(x+2)^3

= x^3+2^3+3*x*2(x+2)

=x^3+8+6x(x+2)

= x^3+8+6x^2+12x.

Answer 2

Answer:

The identity is used is a (a+b)^3

we take

X^3+2^3+3×x×2 + 3 (x)(2)

x^3+8+6x+3x+2

x^3 +8+9x+2