Answer:
5r + 2
Step-by-step explanation:
9r-5r+2+r=5r+2
\mathrm{Group\:like\:terms}
=9r-5r+r+2
\mathrm{Add\:similar\:elements:}\:9r-5r+r=5r
=5r+2
This expression is a perfect square trinomial. It has two answers but they don't have to be different. In this case it has to be the same - because it is a perfect square trinomial.
Answer:-21
Step-by-step explanation:
3•(-7)
3 x -7=-21
You would need to distribute the parenthesis. so the equation will be 12r-12<-12+8r
Answer:
Step-by-step explanation:
14x^2-21