z^2-4z+4=-9

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Solution for z^2-4z+4=-9 equation: 



z^2-4z+4=-9

We move all terms to the left:

z^2-4z+4-(-9)=0

We add all the numbers together, and all the variables

z^2-4z+13=0

a = 1; b = -4; c = +13;
Δ = b2-4ac
Δ = -42-4·1·13
Δ = -36
Delta is less than zero, so there is no solution for the equation

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