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6x^2+4x=-6
We move all terms to the left:
6x^2+4x-(-6)=0
We add all the numbers together, and all the variables
6x^2+4x+6=0
a = 6; b = 4; c = +6;
Δ = b2-4ac
Δ = 42-4·6·6
Δ = -128
Delta is less than zero, so there is no solution for the equation
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