17 tens is 170
So the unit form is 1 hundred, 7 tens, 0 ones
Answer:
The answer is (r + 3)(r - 3)
Step-by-step explanation:
There need to be two number that add together to get 0
and two number that multiply together to get -9
3 + -3 = 0
3 · -3 = -9
= (r + 3)(r - 3)