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18=(13x)-(6x^2)
We move all terms to the left:
18-((13x)-(6x^2))=0
We get rid of parentheses
6x^2-13x+18=0
a = 6; b = -13; c = +18;
Δ = b2-4ac
Δ = -132-4·6·18
Δ = -263
Delta is less than zero, so there is no solution for the equation
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