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x2+18=6x
We move all terms to the left:
x2+18-(6x)=0
We add all the numbers together, and all the variables
x^2-6x+18=0
a = 1; b = -6; c = +18;
Δ = b2-4ac
Δ = -62-4·1·18
Δ = -36
Delta is less than zero, so there is no solution for the equation
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