Answer:
2
Step-by-step explanation:
Thats your answerrrrrr
For the zero product property questions it's choices 2 and 3 since they're quadratics factored and set equal to zero.
for the quadratic formula questions it would be answer choices 2 and 3 also because they're unfactored trinomial quadratic expressions
The gcf of 9 and 18 is 18
2 - b.
3 - a.
I'm not sure about 4. Hope this helps!