Answer:
option A and B

and

Step-by-step explanation:
we have

The formula to solve a quadratic equation of the form
is equal to

in this problem we have

so

substitute in the formula


so

and

Answer:
40
Step-by-step explanation:
-8*-5=40
two negatives equal a positive
Answer:
4000
Step-by-step explanation:
So what is your question cause there isn't one