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6x^2-3x=-7
We move all terms to the left:
6x^2-3x-(-7)=0
We add all the numbers together, and all the variables
6x^2-3x+7=0
a = 6; b = -3; c = +7;
Δ = b2-4ac
Δ = -32-4·6·7
Δ = -159
Delta is less than zero, so there is no solution for the equation
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