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x in (-oo:+oo)
X^2+x = 11/4 // - 11/4
X^2+x-(11/4) = 0
X^2+x-11/4 = 0
X^2+x-11/4 = 0 // - X^2-11/4
x = -(X^2-11/4)
x = 11/4-X^2
x = 11/4-X^2
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