Answer: 8r(2r + 3)
Step-by-step explanation:
Use the distributive property to distribute -2r to each of the factors inside the parentheses.
-2r(-13r + 5r - 12)
26r^2 - 10r^2 + 24r^2
16r^2 +24r maybe this is the answer you're looking for but I'll simplify further
8r(2r + 3)