Jawabanmu

2014-09-03T22:38:46+07:00
(a+b) = a+b
(a-b) = a-b
(ax+b) x ( cx+d ) = ax.cx + ax.d + b.cx + b.d
2014-09-03T22:40:26+07:00
(a+b) = a + b
(a-b) = a - b
(ax+b) (cx+d) = acx² + adx + bcx + bd