Rút gọn
Rút gọn
1,(a/b-b/a) : (a/b+b/a-2) . (1+b/a)
2,(x^2-y^2/x^2+2xy + 2/xy) : (1/x + 1/) . 1/x-y
3,(x^2/x^3-4x + 6/6-3x + 1/x+2) : (x-2 + 10-x^2/x+2)
1,(a/b-b/a) : (a/b+b/a-2) . (1+b/a)
2,(x^2-y^2/x^2+2xy + 2/xy) : (1/x + 1/) . 1/x-y
3,(x^2/x^3-4x + 6/6-3x + 1/x+2) : (x-2 + 10-x^2/x+2)