1.345*0.345*2.69-1.345的立方-1.345*0.345的平方

原式=1.345×(0.345×2.69-1.345-0.345×0.345)=1.345×[(1.345-1)×2.69-1.345-(1.345-1)^2]=1.345×[1.345×2.69-2

解答如下（发个图片）

方法一:1.345×0.345×2.69—1.345^2-1.345×0.345^2×2=(1+0.345)×0.345×2.69—1.345²-0.345²×2.69=0.345

原式=1.345*（0.345*2.69-1.345的平方-0.345的平方）=-1.345*（1.345的平方-0.345×2.69+0.345的平方）=-1.345*（1.345的平方-2×0.3

1.345×0.345×2.69－1.3453－1.345×0.3452＝－1.345×(1.3452－2×0.345×1.345+0.3452)＝－1.345×(1.345－0.345)2＝－1.3

错了吧应该是1.345×0.345×2.69-1.345³-1.345×0.345²=-1.345×(1.345²-0.345×2.69+0.345²)=-1.

令a=1.3452a=2.69a-1=0.345则原式为a×(a-1)×2a-a²-2a×(a-1)²=2a³-2a²-a²-2a³+4a&

1.345的平方-0.345×2.69+0.345的平方=1.345的平方-0.345×1.345×2+0.345的平方=(1.345-0.345)^2=1^2=1

1.345²－0.345×2.69＋0.345²=1.345²+0.345x(0.345-2.69)=1.345²-0.345x1.345=1.345x(1.3

abc-a²-ab²=ab(c-b)-a²=abd-a²=a(bd-a)再问：先阅读下面的解题过程，再用这种方法解答题目计算（1.345×0.345×2.96-

0.345²+1.345²-0.345×2.69=0.345²+(1+0.345)²-0.345×2.69=0.345²+0.345²+2×

1.345²×0.345×2－1.345³－1.345×0.345²=-1.345x(1.345²-2x0.345x1.345+0.345²)=-1.

打错了是不?1.345*0.345*2.69-1.345^2-0.345^2=-（1.345-0.345）^2=-1如果没有打错就是1.345^2*0.345*2.69-1.345^2-1.345*0

1.345乘0.345乘2.69-1.345的平方-1.345乘0.345的平方乘2=1.345x0.345x2x1.345-1.345^2-1.345x0.345^2x2=2x1.345x0.345

=1.345（0.345*2069-1.345-0.345平方）=1.345*712.340975=958.098611375我很好奇谁出出来的挂三题目

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)^

=1.345*0.345*(2.69-0.345)-1.345*1.345*1.345=1.345*0.345*2.345-1.345*1.345*1.345=1.345*[(1.345-1)(1.3

=1.345*（2.69-1.345)-0.345^2=1.345^2-0.345^2=(1.345+0.345)*(1.345-0.345)=1.69*1=1.69

1.345*0.345*2.69-1.345^3-1.345*0.345^2=-1.345*(-2*0.345*1.345+1.345^2+0.345^2)=-1.345*(1.345-0.345)^

1.345^2-0.345x2.69+0.345^2=1.345^2-2x1.345x0.345+0.345^2=(1.345-0.345)^2=1^2=1原题少了一个平方.