利用因式分解计算:3.68*15.7-31.4+15.7*0.32=
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/16 11:11:07
利用因式分解计算:3.68*15.7-31.4+15.7*0.32=
3.68*15.7-31.4+15.7*0.32
=3.68*15.7-15.7×2+15.7*0.32
=15.7×(3.68-2+0.32)
=15.7×2
=31.4
3.68*15.7-31.4+15.7*0.32
=3.68*15.7-15.7×2+15.7*0.32
=15.7×(3.68-2+0.32)
=15.7×2
=31.4