a²(x-y)+4y²(y-x)怎么解?
问题描述:
a²(x-y)+4y²(y-x)怎么解?
答
a²(x-y)+4y²(y-x)=a²(x-y)-4y²(x-y)=(x-y)(a²-4y²)=(x-y)(a+2y)(a-2y)
a²(x-y)+4y²(y-x)怎么解?
a²(x-y)+4y²(y-x)=a²(x-y)-4y²(x-y)=(x-y)(a²-4y²)=(x-y)(a+2y)(a-2y)