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x in (-oo:+oo)
-(x*((5*x-4)/3)) = 10 // - 10
-(x*((5*x-4)/3))-10 = 0
(-1*x*(5*x-4))/3-10 = 0
(-1*x*(5*x-4))/3+(-10*3)/3 = 0
-1*x*(5*x-4)-10*3 = 0
4*x-5*x^2-30 = 0
4*x-5*x^2-30 = 0
4*x-5*x^2-30 = 0
DELTA = 4^2-(-30*(-5)*4)
DELTA = -584
DELTA < 0
1 = 0
1/3 = 0
1/3 = 0 // * 3
1 = 0
1 = 0
x belongs to the empty set
x belongs to the empty set
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