# How do you add (3x^2 + 7) - (x^2 - 6x - 4) ?

##### 1 Answer
May 3, 2015

$\left(3 {x}^{2} + 7\right) - \left({x}^{2} - 6 x - 4\right)$

$= 3 {x}^{2} + 7 - {x}^{2} + 6 x + 4$

We group the Like Terms

$= \left(3 {x}^{2} - {x}^{2}\right) + 6 x + \left(7 + 4\right)$

 = color(green)(2x^2 + 6x + 11