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3x^2=6x-12
We move all terms to the left:
3x^2-(6x-12)=0
We get rid of parentheses
3x^2-6x+12=0
a = 3; b = -6; c = +12;
Δ = b2-4ac
Δ = -62-4·3·12
Δ = -108
Delta is less than zero, so there is no solution for the equation
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