Answer:
9r+7r+9r
Step-by-step explanation:
12r^2+9r
You can only add the 7r^2 and the 5r^2. So, once you add them it's as simplified as you can get.
Hope you have a good day! (✿◡‿◡)(((o(*ﾟ▽ﾟ*)o)))
B
It looks like addition to me.
Answer: 89
The common factor of the expression is 5x
