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good grief, I thought we went through all that...
http://www.jiskha.com/display.cgi?id=1282574981
9a^2b+2a^2b = 11a^2b
3x+5c = 8c , so ....
9a^2b + 3c + 2a^2b + 5c
= 11a^2b + 8c