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x in (-oo:+oo)
((16*x)/(-22))*x = 1/2 // - 1/2
((16*x)/(-22))*x-(1/2) = 0
((16*x)/(-22))*x-1/2 = 0
-8/11*x^2 = 1/2 // : -8/11
x^2 = -11/16
x belongs to the empty set
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