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x^2+7x+18=x
We move all terms to the left:
x^2+7x+18-(x)=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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