a^2-4a=-11

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Solution for a^2-4a=-11 equation: 



a^2-4a=-11

We move all terms to the left:

a^2-4a-(-11)=0

We add all the numbers together, and all the variables

a^2-4a+11=0

a = 1; b = -4; c = +11;
Δ = b2-4ac
Δ = -42-4·1·11
Δ = -28
Delta is less than zero, so there is no solution for the equation

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