2=x+7/x-10

Solution for 2=x+7/x-10 equation:

D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

2 = x+7/x-10 // - x+7/x-10

2-x-(7/x)+10 = 0

2-x-7*x^-1+10 = 0

12*x^0-1*x^1-7*x^-1 = 0

(12*x^1-1*x^2-7*x^0)/(x^1) = 0 // * x^2

x^1*(12*x^1-1*x^2-7*x^0) = 0

x^1

12*x-x^2-7 = 0

12*x-x^2-7 = 0

DELTA = 12^2-(-7*(-1)*4)

DELTA = 116

DELTA > 0

x = (116^(1/2)-12)/(-1*2) or x = (-116^(1/2)-12)/(-1*2)

x = (2*29^(1/2)-12)/(-2) or x = (-2*29^(1/2)-12)/(-2)

x in { (2*29^(1/2)-12)/(-2), (-2*29^(1/2)-12)/(-2)} 

x in { (2*29^(1/2)-12)/(-2), (-2*29^(1/2)-12)/(-2) }