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2x+4x-3x^2=54
We move all terms to the left:
2x+4x-3x^2-(54)=0
We add all the numbers together, and all the variables
-3x^2+6x-54=0
a = -3; b = 6; c = -54;
Δ = b2-4ac
Δ = 62-4·(-3)·(-54)
Δ = -612
Delta is less than zero, so there is no solution for the equation
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