12x+7=12/x

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Solution for 12x+7=12/x equation: 


D( x )

x = 0

x = 0

x = 0

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

12*x+7 = 12/x // - 12/x

12*x-(12/x)+7 = 0

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

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

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

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

x^1

12*x^2+7*x-12 = 0

12*x^2+7*x-12 = 0

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

DELTA = 625

DELTA > 0

x = (625^(1/2)-7)/(2*12) or x = (-625^(1/2)-7)/(2*12)

x = 3/4 or x = -4/3

x in { -4/3, 3/4} 

x in { -4/3, 3/4 }

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