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D( x )
(1-x)*(2-x) = 0
(1-x)*(2-x) = 0
(1-x)*(2-x) = 0
( 1-x )
1-x = 0 // - 1
-x = -1 // * -1
x = 1
( 2-x )
2-x = 0 // - 2
-x = -2 // * -1
x = 2
x in (-oo:1) U (1:2) U (2:+oo)
x/((1-x)*(2-x)) = 0.66 // - 0.66
x/((1-x)*(2-x))-0.66 = 0
x/((1-x)*(2-x))+(-0.66*(1-x)*(2-x))/((1-x)*(2-x)) = 0
x-0.66*(1-x)*(2-x) = 0
2.98*x-0.66*x^2-1.32 = 0
2.98*x-0.66*x^2-1.32 = 0
2.98*x-0.66*x^2-1.32 = 0
DELTA = 2.98^2-(-1.32*(-0.66)*4)
DELTA = 2.98^2-3.4848
DELTA = 5.3956
DELTA > 0
x = ((2.98^2-3.4848)^(1/2)-2.98)/(-0.66*2) or x = (-(2.98^2-3.4848)^(1/2)-2.98)/(-0.66*2)
x = -0.75757576*((2.98^2-3.4848)^(1/2)-2.98) or x = 0.75757576*((2.98^2-3.4848)^(1/2)+2.98)
(x+0.75757576*((2.98^2-3.4848)^(1/2)-2.98))*(x-0.75757576*((2.98^2-3.4848)^(1/2)+2.98)) = 0
((x+0.75757576*((2.98^2-3.4848)^(1/2)-2.98))*(x-0.75757576*((2.98^2-3.4848)^(1/2)+2.98)))/((1-x)*(2-x)) = 0
((x+0.75757576*((2.98^2-3.4848)^(1/2)-2.98))*(x-0.75757576*((2.98^2-3.4848)^(1/2)+2.98)))/((1-x)*(2-x)) = 0 // * (1-x)*(2-x)
(x+0.75757576*((2.98^2-3.4848)^(1/2)-2.98))*(x-0.75757576*((2.98^2-3.4848)^(1/2)+2.98)) = 0
( x+0.75757576*((2.98^2-3.4848)^(1/2)-2.98) )
x+0.75757576*((2.98^2-3.4848)^(1/2)-2.98) = 0 // - 0.75757576*((2.98^2-3.4848)^(1/2)-2.98)
x = -(0.75757576*((2.98^2-3.4848)^(1/2)-2.98))
x = -0.75757576*((2.98^2-3.4848)^(1/2)-2.98)
( x-0.75757576*((2.98^2-3.4848)^(1/2)+2.98) )
x-0.75757576*((2.98^2-3.4848)^(1/2)+2.98) = 0 // + -0.75757576*((2.98^2-3.4848)^(1/2)+2.98)
x = -(-0.75757576*((2.98^2-3.4848)^(1/2)+2.98))
x = 0.75757576*((2.98^2-3.4848)^(1/2)+2.98)
x in { -0.75757576*((2.98^2-3.4848)^(1/2)-2.98), 0.75757576*((2.98^2-3.4848)^(1/2)+2.98) }
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