Jawabanmu

Jawaban paling cerdas!
2014-08-29T21:22:07+07:00
A) -7ab+5bc-2bc+ab = -7ab+3bc+ab
b)  5cb+5b²a-2bc-9ab = 5b²a+5cb-2bc-9ab
                                = 5b²a+3bc-9ab
   semoga membantu :)
2 4 2
2014-08-29T21:24:20+07:00
-7ab+5bc+2bc+ab= -7ab+ab+5bc+2bc
                          = -6ab+7bc