4x-2/x+1=10,4x^2-9x-2=0,(2x-9/4)^2=113/16,所以x=(9+根号113)/8,x=(9-根号113)/8
10 = 4x - 2/x +14x^2 -9x +2 = 0(4x -1)(x - 2) = 0x = 2 或 1/4
x=-2
-2
X=1/2