Jawabanmu

2014-09-06T17:37:45+07:00
(ax+b) x (cx+d) = (acx² + bcx) (adx +bd)

maaf kalo salah:-)
2014-09-06T17:41:15+07:00
Ax × cx + ax × d + b × cx + b × d
ac×2 + adx + bcx + bd