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3x(x-1)=-4
We move all terms to the left:
3x(x-1)-(-4)=0
We add all the numbers together, and all the variables
3x(x-1)+4=0
We multiply parentheses
3x^2-3x+4=0
a = 3; b = -3; c = +4;
Δ = b2-4ac
Δ = -32-4·3·4
Δ = -39
Delta is less than zero, so there is no solution for the equation
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