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D( x )
2*x^2-11+5 = 0
3*x-6 = 0
2*x^2-11+5 = 0
2*x^2-11+5 = 0
2*x^2 = 6 // : 2
x^2 = 3
x^2 = 3 // ^ 1/2
abs(x) = 3^(1/2)
x = 3^(1/2) or x = -3^(1/2)
3*x-6 = 0
3*x-6 = 0
3*x-6 = 0 // + 6
3*x = 6 // : 3
x = 6/3
x = 2
x in (-oo:-3^(1/2)) U (-3^(1/2):3^(1/2)) U (3^(1/2):2) U (2:+oo)
(((3*x^2+x-14)/(2*x^2-11+5))*(2*x-1))/(3*x-6) = 0
((3*x^2+x-14)*(2*x-1))/((2*x^2-6)*(3*x-6)) = 0
3*x^2+x-14 = 0
3*x^2+x-14 = 0
DELTA = 1^2-(-14*3*4)
DELTA = 169
DELTA > 0
x = (169^(1/2)-1)/(2*3) or x = (-169^(1/2)-1)/(2*3)
x = 2 or x = -7/3
(x+7/3)*(x-2) = 0
((x+7/3)*(x-2)*(2*x-1))/((2*x^2-6)*(3*x-6)) = 0
( 2*x-1 )
2*x-1 = 0 // + 1
2*x = 1 // : 2
x = 1/2
( x+7/3 )
x+7/3 = 0 // - 7/3
x = -7/3
( x-2 )
x-2 = 0 // + 2
x = 2
x in { 2}
x in { 1/2, -7/3 }
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