Question

Please help! taking a final exam and cant get any wrong!
Find the sum of the three expressions and choose the correct answer.

-8a3b + 3a2b2 - 5

2 + 5a2b2

3a3b + 7 - 9a2b2

-5a3b-a2b2+ 2
-5a3b+ 8a2b2+ 4
-5a3b-a2b2+ 4

Answer 1

so what option do you pick?

Answer 2

Please do not assume that we are here to take the exam for you.

We can try to focus your efforts tho ...

Answer 3

I was going to put A.

Answer 4

lets try adding up the constants we see first

Answer 5

does: 7+2-5 = 2 ?

Answer 6

no

Answer 7

then it cannot be A

Answer 8

the only difference in the other 2 options are in the a2b2 terms

so add up all your a2b2 terms and see if its either 8 or -1

Answer 9

Its B right?

Answer 10

what do you get when you add up all the a2b2 terms?