4道初一分式题3/x-3/x+13/x+y-1/x-yx/x+2-3/x²-41/x+1+1/x+1-x²+1/x²-1

Question

4道初一分式题
3/x - 3/x+1
3/x+y - 1/x-y
x/x+2 - 3/x²-4
1/x+1 + 1/x+1 - x²+1/x²-1

Answer 1

1.=1
2.=2/x
3.=-1-x²
4.=1-x²+1/x²