a2-4a+28=0

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Solution for a2-4a+28=0 equation: 



a2-4a+28=0

We add all the numbers together, and all the variables

a^2-4a+28=0

a = 1; b = -4; c = +28;
Δ = b2-4ac
Δ = -42-4·1·28
Δ = -96
Delta is less than zero, so there is no solution for the equation

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