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36000=-x^2+12x
We move all terms to the left:
36000-(-x^2+12x)=0
We get rid of parentheses
x^2-12x+36000=0
a = 1; b = -12; c = +36000;
Δ = b2-4ac
Δ = -122-4·1·36000
Δ = -143856
Delta is less than zero, so there is no solution for the equation
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