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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(x^2-(2*x))/x = ((7-(2*x))^1)/2 // - ((7-(2*x))^1)/2
(x^2-(2*x))/x-(((7-(2*x))^1)/2) = 0
(x^2-2*x)/x-((7-2*x)/2) = 0
(x^2-2*x)/x+(-1*(7-2*x))/2 = 0
(2*(x^2-2*x))/(2*x)+(-1*x*(7-2*x))/(2*x) = 0
2*(x^2-2*x)-1*x*(7-2*x) = 0
4*x^2-11*x = 0
4*x^2-11*x = 0
x*(4*x-11) = 0
4*x-11 = 0 // + 11
4*x = 11 // : 4
x = 11/4
x*(x-11/4) = 0
(x*(x-11/4))/(2*x) = 0
(x*(x-11/4))/(2*x) = 0 // * 2*x
x*(x-11/4) = 0
( x-11/4 )
x-11/4 = 0 // + 11/4
x = 11/4
( x )
x = 0
x in { 0}
x = 11/4
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