Answer
9$r^{2}$ - 4r + 19
Work Step by Step
1. Apply the distributive property.
2(3$r^{2}$ + 4r + 2) - 3(-$r^{2}$ + 4r - 5) = 6$r^{2}$ + 8r + 4 + 3$r^{2}$ - 12r + 15
2. Group like terms together.
(6$r^{2}$ + 3$r^{2}$) + (8r - 12r) + (4 + 15)
3. Add like terms.
9$r^{2}$ - 4r + 19
