(1十0.23十0.45)x(0.45十o.67十0.89)一(1十0.45十0.67十0.89x(0.23十0.45)
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/19 22:13:24
(1十0.23十0.45)x(0.45十o.67十0.89)一(1十0.45十0.67十0.89x(0.23十0.45)(1十0.23十0.45)x(0.45十o.67十0.89)一(1十0.45十0
(1十0.23十0.45)x(0.45十o.67十0.89)一(1十0.45十0.67十0.89x(0.23十0.45)
(1十0.23十0.45)x(0.45十o.67十0.89)一(1十0.45十0.67十0.89
x(0.23十0.45)
(1十0.23十0.45)x(0.45十o.67十0.89)一(1十0.45十0.67十0.89x(0.23十0.45)
设:a=0.45+0.67+0.89
b=0.23+0.45
当a=0.45+0.67+0.89 ,b=0.23+0.45时
原式=(1+b)a-(1+a)b
=a+ab-(b+ab)
=a+ab-b-ab
=a-b
a-b=0.45+0.67+0.89-(0.23+0.45)=1.33
∴原式=1.33
师范附小李为您解答~
如果您满意请按下采纳,您的采纳是我前进的动力~
(1十0.23十0.45)x(0.45十o.67十0.89)一(1十0.45十0.67十0.89x(0.23十0.45)
1十3十5十7十9十11十、、、、、、十99=()=()x()
x十1x十6十x怎么?
(x十k)(x十k十1)十四分之一
1十10十X＝
1234567654321x(1十2十3十4十5十6十7十6十5十4十3十2十1)等于多少?
1十2十3十4十5十6十7十8十9十10十11十12十13十14二
(x一1)(x2十x)十(x十1)(x2十x十1)等于多少?
1十1十1十1十1十1十1十1十11十1十1十1十1十1十1十1十11十1十1二?
100十4十7十8十1十1十1十8=?
1十1十1十2十3十4十5十9
1十2十3十4十5十6十7十1
100十99十……十5十4十3十2十1
1十8十9十7十6十5十4十5＝?
1十2十3十4十5十6十7十11是多少
分解因式:×4十2x3十3X2十2x十1
1十1十7十8十6十7十7十9十lo十28=?
1十2十3十4十5十6十7十8十9十10=