来自杜玉军的问题
【(1)(x的-1次方+y的-1次方)²-(x的-1次方-y的-1次方)²=(2)(x²+2x-3/x²+3x-10)*(x²+8x+15/x-1)÷(x+3/2-x)=解方程:3x+1/2x-1=3x-1/2x-5】
(1)(x的-1次方+y的-1次方)²-(x的-1次方-y的-1次方)²=
(2)(x²+2x-3/x²+3x-10)*(x²+8x+15/x-1)÷(x+3/2-x)=
解方程:3x+1/2x-1=3x-1/2x-5
1回答
2020-05-14 18:36