Jawabanmu

2014-06-17T22:21:43+07:00
2014-06-17T22:29:24+07:00
(2x+3)(x²+x)= 2x³ + 2x²+ 3x²+ 3x
= 2x³ + 5x²+ 3x

= 6x² + 10x + 3