初二下学期分解因式[数学]
1.a(x-y)-b(y-x)+c(x-y)
2.x(m+n)-y(n+m)+(m+n)
3.(x+y)²-16(x-y)²
4.a²(a-b)²-b²(a+b)²
5.(x+y+z)²-(x-y-z)²
6.x²y-2xy²+y³
7.16-(2a+3b)²
8.(a²+4)²-16a²
9.9+6(a+b)+(a+b)²
10.(x+1)(x+2)+1/4
11.(a+b/2)²-(a-b/2)²