4b^2-4b=-4

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Solution for 4b^2-4b=-4 equation: 



4b^2-4b=-4

We move all terms to the left:

4b^2-4b-(-4)=0

We add all the numbers together, and all the variables

4b^2-4b+4=0

a = 4; b = -4; c = +4;
Δ = b2-4ac
Δ = -42-4·4·4
Δ = -48
Delta is less than zero, so there is no solution for the equation

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