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4x^2+12x=-12
We move all terms to the left:
4x^2+12x-(-12)=0
We add all the numbers together, and all the variables
4x^2+12x+12=0
a = 4; b = 12; c = +12;
Δ = b2-4ac
Δ = 122-4·4·12
Δ = -48
Delta is less than zero, so there is no solution for the equation
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