Question

数学题一道,望速解

一道有理数运算,不仅要解答过程,还要说明原因.
原式=(-3.14)*35.2+3.14*2*(-23.3)-3.14*1/2*3.14

谢谢.
简便运算

Answer 1

(-3.14)*35.2+3.14*2*(-23.3)-3.14*1/2*3.14
=(-3.14)(35.2+2*23.3+1/2*3.14)(乘法分配律逆用）
=(-3.14)(35.2+46.6+1.57)
=(-3.14)*83.37
=-261.7818

Answer 2

原式=(-3.14)*35.2+3.14*2*(-23.3)-3.14*1/2*3.14
=(-3.14)*(35.2+2*23.3+1/2*3.14)
=(-3.14)*(35.2+46.6+1.57)
=(-3.14)*83.37
=-261.7818

Answer 3

=-3.14*35.2-3.14*46.6-3.14*1.57
=-3.14(35.2+46.6+1.57)
=-3.14*83.37
=-261.7818

Answer 4

这个样子
不知道对不对哦
(*^__^*) 嘻嘻……

=(-3.14)*35.2+3.14*2*(-23.3)-3.14*1/2*3.14
=(-3.14)*(35.2+2*23.3+1/2*3.14)
=(-3.14)*(35.2+46.6+1.57)
=(-3.14)*83.37
=-261.7818

Answer 5

原式=(-3.14)*35.2+3.14*2*(-23.3)-3.14*1/2*3.14
=(-3.14)*(35.2+2*23.3+1/2*3.14)
=(-3.14)*(35.2+46.6+1.57)
=(-3.14)*83.37
=-261.7818

汗哦，给分哟