Question

Question #c933f

Answer 1

in this expression, the coefficient of `x^2` is 9.

Explanation:

`(x+3)^3`
=`(x^2+6x+9)(x+3)`
=`x^3+6x^2+9x+3x^2+18x+27`
=`x^3+9x^2+27x+27`

In this expression, the coefficient of `x^2` is 9.