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D( x )
2-(2*x) = 0
2-(2*x) = 0
2-(2*x) = 0
2-2*x = 0
2-2*x = 0 // - 2
-2*x = -2 // : -2
x = -2/(-2)
x = 1
x in (-oo:1) U (1:+oo)
2.92 = x/(2-(2*x)) // - x/(2-(2*x))
2.92-(x/(2-(2*x))) = 0
2.92-(x/(2-2*x)) = 0
(-1*x)/(2-2*x)+2.92 = 0
(-1*x)/(2-2*x)+(2.92*(2-2*x))/(2-2*x) = 0
2.92*(2-2*x)-1*x = 0
5.84-6.84*x = 0
(5.84-6.84*x)/(2-2*x) = 0
(5.84-6.84*x)/(2-2*x) = 0 // * 2-2*x
5.84-6.84*x = 0
5.84-6.84*x = 0 // - 5.84
-6.84*x = -5.84 // : -6.84
x = -5.84/(-6.84)
x = 0.85380117
x = 0.85380117
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