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-(6x^2+24x+36)=0
We get rid of parentheses
-6x^2-24x-36=0
a = -6; b = -24; c = -36;
Δ = b2-4ac
Δ = -242-4·(-6)·(-36)
Δ = -288
Delta is less than zero, so there is no solution for the equation
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