2k^2+3k+21=0

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Solution for 2k^2+3k+21=0 equation: 



2k^2+3k+21=0

a = 2; b = 3; c = +21;
Δ = b2-4ac
Δ = 32-4·2·21
Δ = -159
Delta is less than zero, so there is no solution for the equation

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