【8(x-y)的5次方+(y-x）的4次方】除以【2(x-y)的2次方】
问题描述：
【8(x-y)的5次方+(y-x）的4次方】除以【2(x-y)的2次方】
答
=4(x-y)³-(x-y)²
答
=[8(x-y)^5+(x-y)^4]/[2(x-)²]
=8(x-y)^5/[2(x-)²]+(x-y)^4/[2(x-)²]
=4(x-y)³+(x-y)²/2
答
[8(x-y)^5+(y-x)^4]/[2(x-y)^2]
=4(x-y)^3+[(x-y)^2]/2
=(x-y)^2(8x-y8+1)/2