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x in (-oo:+oo)
14*x^3-(((16*x^2)/2)*x^2) = 0
14*x^3-8*x^4 = 0
14*x^3-8*x^4 = 0
2*x^3*(7-4*x) = 0
7-4*x = 0 // - 7
-4*x = -7 // : -4
x = -7/(-4)
x = 7/4
2*x^3 = 0
2*x^3 = 0 // : 2
x^3 = 0
x = 0
x in { 7/4, 0 }
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