计算：① 2a3(3a2−5a)② (x−2)(x+3)③ (3x−2)(−3x−2)④ (m−12n)2_刷题宝

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计算：① 2a3(3a2−5a)

② (x−2)(x+3)

③ (3x−2)(−3x−2)

④ (m−

1

2

n)2

上一题下一题 0.0难度选择题更新时间:2020-01-31 09:26:51

答案(点此获取答案解析）

①原式= 6a3·a2-10a3·a =6a⁵-10a<

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