题目内容
【题目】利用因式分解计算：3.68×15.7-31.4+15.7×0.32.
【答案】31.4
【解析】试题分析:
3.68×15.7-31.4+15.7×0.32
=3.68×15.7+15.7×0.32-31.4
=15.7(3.68+0.32)-31.4
=15.7×4-31.4
=62.8-31.4
=31.4.
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题目内容
【题目】利用因式分解计算：3.68×15.7-31.4+15.7×0.32.
【答案】31.4
【解析】试题分析:
3.68×15.7-31.4+15.7×0.32
=3.68×15.7+15.7×0.32-31.4
=15.7(3.68+0.32)-31.4
=15.7×4-31.4
=62.8-31.4
=31.4.
