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D( x )
4*x+2 = 0
4*x-2 = 0
4*x+2 = 0
4*x+2 = 0
4*x+2 = 0 // - 2
4*x = -2 // : 4
x = -2/4
x = -1/2
4*x-2 = 0
4*x-2 = 0
4*x-2 = 0 // + 2
4*x = 2 // : 4
x = 2/4
x = 1/2
x in (-oo:-1/2) U (-1/2:1/2) U (1/2:+oo)
1/(4*x+2)+1/(4*x-2) = 2 // - 2
1/(4*x+2)+1/(4*x-2)-2 = 0
(1*(4*x-2))/((4*x+2)*(4*x-2))+(1*(4*x+2))/((4*x+2)*(4*x-2))+(-2*(4*x+2)*(4*x-2))/((4*x+2)*(4*x-2)) = 0
1*(4*x-2)+1*(4*x+2)-2*(4*x+2)*(4*x-2) = 0
8*x-32*x^2+8 = 0
8*x-32*x^2+8 = 0
8*(x-4*x^2+1) = 0
x-4*x^2+1 = 0
DELTA = 1^2-(-4*1*4)
DELTA = 17
DELTA > 0
x = (17^(1/2)-1)/(-4*2) or x = (-17^(1/2)-1)/(-4*2)
x = (17^(1/2)-1)/(-8) or x = (17^(1/2)+1)/8
8*(x-((17^(1/2)-1)/(-8)))*(x-((17^(1/2)+1)/8)) = 0
(8*(x-((17^(1/2)-1)/(-8)))*(x-((17^(1/2)+1)/8)))/((4*x+2)*(4*x-2)) = 0
(8*(x-((17^(1/2)-1)/(-8)))*(x-((17^(1/2)+1)/8)))/((4*x+2)*(4*x-2)) = 0 // * (4*x+2)*(4*x-2)
8*(x-((17^(1/2)-1)/(-8)))*(x-((17^(1/2)+1)/8)) = 0
( x-((17^(1/2)+1)/8) )
x-((17^(1/2)+1)/8) = 0 // + (17^(1/2)+1)/8
x = (17^(1/2)+1)/8
( x-((17^(1/2)-1)/(-8)) )
x-((17^(1/2)-1)/(-8)) = 0 // + (17^(1/2)-1)/(-8)
x = (17^(1/2)-1)/(-8)
x in { (17^(1/2)+1)/8, (17^(1/2)-1)/(-8) }
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