计算:(3x+1)(x+2)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/28 02:15:56
计算:(3x+1)(x+2)
x){nua\mQmiT]BtqvPM$_\g5b2PSn ;gWm~, 42: FTK!q@34X vys

计算:(3x+1)(x+2)
计算:(3x+1)(x+2)

计算:(3x+1)(x+2)
(3x+1)(x+2)
=3x²+x+6x+2
=3x²+7x+2

:(3x+1)(x+2)
=3x^2+7x+2

﹙3x+1﹚﹙x+2﹚
=3x﹙x+2﹚+1×﹙x+2﹚
=3x²+6x+x+2
=3x²+7x+2.