Question

How do you evaluate `(9x ^ { 2} + 15x ) + ( - 3x )`?

Answer 1

`9x^2+12x`

Explanation:

Identify and combine like terms:

`(9x^2+15x)+(-3x)->9x^2+15x-3x`

`9x^2+color(red)(15x)-color(red)(3x)`

`9x^2+color(red)(12x`