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x in (-oo:+oo)
(-1/4)*(x-1)^2+1 = 2*x^2-x+3 // - 2*x^2-x+3
(-1/4)*(x-1)^2-(2*x^2)+x-3+1 = 0
(-1/4)*(x-1)^2-2*x^2+x-3+1 = 0
x-1/4*(x-1)^2-2*x^2-3+1 = 0
x-1/4*(x-1)^2-2*x^2-3+1 = 0
1/2*x-9/4*x^2+x-3-1/4+1 = 0
3/2*x-9/4*x^2-3-1/4+1 = 0
3/2*x-9/4*x^2-13/4+1 = 0
3/2*x-9/4*x^2-9/4 = 0
3/2*x-9/4*x^2-9/4 = 0
3/2*(x-3/2*x^2-3/2) = 0
x-3/2*x^2-3/2 = 0
DELTA = 1^2-(-3/2*(-3/2)*4)
DELTA = -8
DELTA < 0
3/2 = 0
3/2 = 0
3/2 = 0 // * 2
3 = 0
x belongs to the empty set
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