math
posted by kamleen .
is this anwer correct
9a^2b + 3c + 2a^2b + 5c =
ANSWER : 11a^2 + 8c^2

your answer is not correct
9a^2b + 3c + 2a^2b + 5c
= 11a^2b + 8c 
11a^2 + 8c
Where did you get c^2? 
9a^2b + 2a^2b= 11a^2
3c+5c = 8c^2
so the answer IS 11a^2 +8c^2 
No, it isn't.
Both your last equations, and "the answer" are wrong. Read again the posts of Reiny and PsyDAG. 
there are choices
a) 19a^2bc
b) 11a^2b+8c
c) 11a^4b^2 +8c^2
d) 19a^2b^2c^2
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