5-2x=-4/x-7

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Solution for 5-2x=-4/x-7 equation: 


D( x )

x = 0

x = 0

x = 0

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

5-(2*x) = -4/x-7 // + -4/x-7

5-(2*x)-(-4/x)+7 = 0

4*x^-1-2*x+5+7 = 0

4*x^-1-2*x^1+12*x^0 = 0

(12*x^1-2*x^2+4*x^0)/(x^1) = 0 // * x^2

x^1*(12*x^1-2*x^2+4*x^0) = 0

x^1

12*x-2*x^2+4 = 0

12*x-2*x^2+4 = 0

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

DELTA = 176

DELTA > 0

x = (176^(1/2)-12)/(-2*2) or x = (-176^(1/2)-12)/(-2*2)

x = (4*11^(1/2)-12)/(-4) or x = (-4*11^(1/2)-12)/(-4)

x in { (4*11^(1/2)-12)/(-4), (-4*11^(1/2)-12)/(-4)} 

x in { (4*11^(1/2)-12)/(-4), (-4*11^(1/2)-12)/(-4) }

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