初中乘法公式的一些题目1.（5-3m)²2.(-5ayz+1/5a²)²3.(a+b)²(a-b)²(a²+b²)²4.（a-b-c)²5.(2a+3b-4c)²6.(a+b+c+d)(a+b-c-d)7.(a+b+c+d)²8.(x+y)(x-y)9.(3x+2y)(3x-2y)10.(-3x+2y)(-3x-2y)11.(7mn²-8cd²)(7m²n+8cd²)12.1/5(30a²+15b²)(6a²-3b²)13.(x+2y-3)(x-2y+3)14.(x+1/x)²-(x-1/x)²15.(2a-b)²-2b²16.(5m+3n)²-(2m-n)²17.[(a+b)²+(a+b)²](a²-b²)18.(a-2b+3c-1)(a-2b-3c+1)19.(p+2z)²-2(p+2z)(p+3z)+(p+3z)²20.(-mn+ab)²21.(3x-1/2y)²22.（-1/3m²n+3/4mn²)²23.已知(a-b)²=7,（a+b)²=13求a²+b²,ab的值.在8：30之前。

初中乘法公式的一些题目
1.（5-3m)²
2.(-5ayz+1/5a²)²
3.(a+b)²(a-b)²(a²+b²)²
4.（a-b-c)²
5.(2a+3b-4c)²
6.(a+b+c+d)(a+b-c-d)
7.(a+b+c+d)²
8.(x+y)(x-y)
9.(3x+2y)(3x-2y)
10.(-3x+2y)(-3x-2y)
11.(7mn²-8cd²)(7m²n+8cd²)
12.1/5(30a²+15b²)(6a²-3b²)
13.(x+2y-3)(x-2y+3)
14.(x+1/x)²-(x-1/x)²
15.(2a-b)²-2b²
16.(5m+3n)²-(2m-n)²
17.[(a+b)²+(a+b)²](a²-b²)
18.(a-2b+3c-1)(a-2b-3c+1)
19.(p+2z)²-2(p+2z)(p+3z)+(p+3z)²
20.(-mn+ab)²
21.(3x-1/2y)²
22.（-1/3m²n+3/4mn²)²
23.已知(a-b)²=7,（a+b)²=13求a²+b²,ab的值.
在8：30之前。