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x in (-oo:+oo)
(5/6)*(24*x^2+18*x-30) = 0
5/6*(24*x^2+18*x-30) = 0
24*x^2+18*x-30 = 0
6*(4*x^2+3*x-5) = 0
4*x^2+3*x-5 = 0
DELTA = 3^2-(-5*4*4)
DELTA = 89
DELTA > 0
x = (89^(1/2)-3)/(2*4) or x = (-89^(1/2)-3)/(2*4)
x = (89^(1/2)-3)/8 or x = (-(89^(1/2)+3))/8
6*(x+(89^(1/2)+3)/8)*(x-((89^(1/2)-3)/8)) = 0
5/6*6*(x+(89^(1/2)+3)/8)*(x-((89^(1/2)-3)/8)) = 0
( x+(89^(1/2)+3)/8 )
x+(89^(1/2)+3)/8 = 0 // - (89^(1/2)+3)/8
x = -((89^(1/2)+3)/8)
( x-((89^(1/2)-3)/8) )
x-((89^(1/2)-3)/8) = 0 // + (89^(1/2)-3)/8
x = (89^(1/2)-3)/8
x in { -((89^(1/2)+3)/8), (89^(1/2)-3)/8 }
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