Question

How do you simplify `(3r ^ { 2} - 1) - ( 3r + 6)`?

Answer 1

`3r^2-3r-7`

Explanation:

Original Equation: `(3r^2−1)−(3r+6)`

First, distribute the negative through the second set of parentheses.

`3r2−1−3r-6`

Now, all you need to do is combine like terms.

`3r^2-3r-7`