4a^2+8a+12=0

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Solution for 4a^2+8a+12=0 equation: 



4a^2+8a+12=0

a = 4; b = 8; c = +12;
Δ = b2-4ac
Δ = 82-4·4·12
Δ = -128
Delta is less than zero, so there is no solution for the equation

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