7x+2/x-3-2x-9/x-3

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Solution for 7x+2/x-3-2x-9/x-3 equation:


D( x )

x = 0

x = 0

x = 0

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

7*x-(2*x)+2/x-(9/x)-3-3 = 0

7*x-2*x+2/x-9*x^-1-3-3 = 0

5*x^1-7*x^-1-6*x^0 = 0

(5*x^2-6*x^1-7*x^0)/(x^1) = 0 // * x^2

x^1*(5*x^2-6*x^1-7*x^0) = 0

x^1

5*x^2-6*x-7 = 0

5*x^2-6*x-7 = 0

DELTA = (-6)^2-(-7*4*5)

DELTA = 176

DELTA > 0

x = (176^(1/2)+6)/(2*5) or x = (6-176^(1/2))/(2*5)

x = (4*11^(1/2)+6)/10 or x = (6-4*11^(1/2))/10

x in { (6-4*11^(1/2))/10, (4*11^(1/2)+6)/10}

x in { (6-4*11^(1/2))/10, (4*11^(1/2)+6)/10 }

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