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D( x )
10*x = 0
10*x = 0
10*x = 0
10*x = 0 // : 10
x = 0
x in (-oo:0) U (0:+oo)
46/(10*x)-x = 10 // - 10
46/(10*x)-x-10 = 0
23/5*x^-1-1*x^1-10*x^0 = 0
(23/5*x^0-1*x^2-10*x^1)/(x^1) = 0 // * x^2
x^1*(23/5*x^0-1*x^2-10*x^1) = 0
x^1
23/5-x^2-10*x = 0
23/5-x^2-10*x = 0
DELTA = (-10)^2-(-1*4*(23/5))
DELTA = 592/5
DELTA > 0
x = ((592/5)^(1/2)+10)/(-1*2) or x = (10-(592/5)^(1/2))/(-1*2)
x = ((592/5)^(1/2)+10)/(-2) or x = (10-(592/5)^(1/2))/(-2)
x in { ((592/5)^(1/2)+10)/(-2), (10-(592/5)^(1/2))/(-2)}
x in { ((592/5)^(1/2)+10)/(-2), (10-(592/5)^(1/2))/(-2) }
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