Question

What is the coefficient of x2 in the expansion of(x+2)3

Answer 1

Answer:

6

Step-by-step explanation:

Answer 2

First expand:

$(x+2)(x+2)(x+2)$

$(x^2+4x+4)(x+2)$

$(x^3+2x^2+4x^2+8x+4x+8)$

Now combine like terms:

$x^3+6x^2+12x+8$

A coefficient is a number that is in front of an x. The number in front of the  x squared term is 6.

So the answer is 6.