a^2-4a+20=0

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Solution for a^2-4a+20=0 equation: 



a^2-4a+20=0

a = 1; b = -4; c = +20;
Δ = b2-4ac
Δ = -42-4·1·20
Δ = -64
Delta is less than zero, so there is no solution for the equation

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