计算1.345*0.345*2.69-1.345^2-1.345*0.345^2看清楚！_数学解答

计算1.345*0.345*2.69-1.345^2-1.345*0.345^2
看清楚！

人气：339 ℃　时间：2020-02-03 22:01:16

解答

1.345x0.345x2.69-1.345^3-1.345x0.345^2
=-1.345x(-0.345x1.345x2+1.345^2+0.345^2)
=-1.345x(1.345-0.345)^2
=-1.345x1
=-1.345