(1)利用因式分解计算:185×0.25+18.5×0.5-20×1.85;
2个回答
185×0.25+18.5×0.5-20×1.85
= 185x0.25+185x0.05-185x0.2
=185x( 0.25+0.05+0.2)
=185x 0.5
=92.5
相关问题
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