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6x^2=4x-9
We move all terms to the left:
6x^2-(4x-9)=0
We get rid of parentheses
6x^2-4x+9=0
a = 6; b = -4; c = +9;
Δ = b2-4ac
Δ = -42-4·6·9
Δ = -200
Delta is less than zero, so there is no solution for the equation
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