Jawabanmu

2014-09-11T19:21:47+07:00
(a + b)(a + b)(a + b)
= (a2 + ab + ba + b2)(a + b)
= a3 + a2b + a2b + ab2 + ba2 + b2a + b2a + b3
= a3 + 2a2b + ab2 + ba2 + 2b2a + b3
1 5 1
2014-09-11T19:22:43+07:00