Posted by kamleen on Monday, August 23, 2010 at 10:49am.
is this anwer correct
9a^2b + 3c + 2a^2b + 5c =
ANSWER : 11a^2 + 8c^2

math  Reiny, Monday, August 23, 2010 at 10:55am
your answer is not correct
9a^2b + 3c + 2a^2b + 5c
= 11a^2b + 8c 
math  PsyDAG, Monday, August 23, 2010 at 10:56am
11a^2 + 8c
Where did you get c^2? 
math  kamleen, Monday, August 23, 2010 at 11:22am
9a^2b + 2a^2b= 11a^2
3c+5c = 8c^2
so the answer IS 11a^2 +8c^2 
math  drwls, Monday, August 23, 2010 at 3:20pm
No, it isn't.
Both your last equations, and "the answer" are wrong. Read again the posts of Reiny and PsyDAG. 
math  kamleen, Monday, August 23, 2010 at 8:25pm
there are choices
a) 19a^2bc
b) 11a^2b+8c
c) 11a^4b^2 +8c^2
d) 19a^2b^2c^2