Jawabanmu

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2014-08-26T19:12:30+07:00
= 8 x^{2} +4x+8x-2
= 8 x^{2} +12x-2
Jawaban paling cerdas!
2014-08-26T19:12:31+07:00
2x.2x  =  4x²
2x.-2   = -4x
4x.2    =  8x
2.-2     =  -4

-4x+8x =4x

=4x²+4x+8x