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

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计算1.345*0.345*2.69-1.345^2-1.345*0.345^2看清楚!计算1.345*0.345*2.69-1.345^2-1.345*0.345^2看清楚!计算1.345*0.34

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

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

拟个2b错的啊

设x=1.345....
2x^2*(x-1)-x^2-x(x-1)^2=x^3-x^2-x
这什么题啊...........不行......不敢算数.......