问几道初二的因式分解(要有过程)
问题描述:
问几道初二的因式分解(要有过程)
1.18X的N+1次方-24X的N次方
2.已知A+B=3,A²B+AB²=1,则AB=
3.X(X-Y)(A-B)-Y(Y-X)(B-A)
4.6X(X-Y)²+3(Y-X)³
5.4(M+N)²-9(M-N)²
答
1.6x^n(3x-4)2.A²B+AB²=AB(A+B)=1 AB=1/33.原式=x(x-y(A-B)-y(x-y)(A-B)=(x-y)²(A-B)4.原式=6x(x-y)²-3(x-y)^3=(x-y)^2(6x-3(x-y))=3(x-y)^2(x+y)5.(2(M+N)+3(M-N))(2(M+N)-3(M-N))=(5M-N)(...