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2+8x=-12x^2
We move all terms to the left:
2+8x-(-12x^2)=0
We get rid of parentheses
12x^2+8x+2=0
a = 12; b = 8; c = +2;
Δ = b2-4ac
Δ = 82-4·12·2
Δ = -32
Delta is less than zero, so there is no solution for the equation
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