1.x²+3x/x²+2x-x²-4/x²+4x+42.a²/a+b-a+b3.(1-1/a-2)÷3-a/2a-44.(x-1/y)÷(y-1/x)5.3-x/x-4+1/4-x=16.x-2/x+2-1=3/x²-47.5/x-1=1/x+38.x+1/x-2+x+2/x-1=2
1.x²+3x/x²+2x-x²-4/x²+4x+42.a²/a+b-a+b3.(1-1/a-2)÷3-a/2a-4
4.(x-1/y)÷(y-1/x)5.3-x/x-4+1/4-x=16.x-2/x+2-1=3/x²-47.5/x-1=1/x+3
8.x+1/x-2+x+2/x-1=2