Jawabanmu

2014-09-11T21:07:09+07:00
A. a^8 + 8ab + b^8
B. 256x^4 + 32xy + 16y^4
2014-09-11T21:08:37+07:00
(a + b)^8
= a^8 + 8.a.b + b^8
= a^8 + 8ab + b^8

(4x + 2y)^4
= (4x)^4 + 4.4x.2y +(2y)^4
= (4^4.x^4) + 32xy + (2^4.y^4)
= 256x^4 + 32xy + 16y^4
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