计算(x的4次方-2x的2次方y2的次方+y的4次方)÷(x+y)²÷(x-y)
问题描述:
计算(x的4次方-2x的2次方y2的次方+y的4次方)÷(x+y)²÷(x-y)
答
(x的4次方-2x的2次方y2的次方+y的4次方)÷(x+y)²÷(x-y)
=(x²-y²)²÷(x+y)²÷(x-y)
=(x-y)²(x+y)²÷(x+y)²÷(x-y)
=x-y