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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(2*x^2+3*x-5)/x-1 = 0
(2*x^2+3*x-5)/x+(-1*x)/x = 0
2*x^2+3*x-1*x-5 = 0
2*x^2+2*x-5 = 0
2*x^2+2*x-5 = 0
2*x^2+2*x-5 = 0
DELTA = 2^2-(-5*2*4)
DELTA = 44
DELTA > 0
x = (44^(1/2)-2)/(2*2) or x = (-44^(1/2)-2)/(2*2)
x = (2*11^(1/2)-2)/4 or x = (-2*11^(1/2)-2)/4
(x-((-2*11^(1/2)-2)/4))*(x-((2*11^(1/2)-2)/4)) = 0
((x-((-2*11^(1/2)-2)/4))*(x-((2*11^(1/2)-2)/4)))/x = 0
((x-((-2*11^(1/2)-2)/4))*(x-((2*11^(1/2)-2)/4)))/x = 0 // * x
(x-((-2*11^(1/2)-2)/4))*(x-((2*11^(1/2)-2)/4)) = 0
( x-((-2*11^(1/2)-2)/4) )
x-((-2*11^(1/2)-2)/4) = 0 // + (-2*11^(1/2)-2)/4
x = (-2*11^(1/2)-2)/4
( x-((2*11^(1/2)-2)/4) )
x-((2*11^(1/2)-2)/4) = 0 // + (2*11^(1/2)-2)/4
x = (2*11^(1/2)-2)/4
x in { (-2*11^(1/2)-2)/4, (2*11^(1/2)-2)/4 }
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