z^2=-2z-13

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Solution for z^2=-2z-13 equation: 



z^2=-2z-13

We move all terms to the left:

z^2-(-2z-13)=0

We get rid of parentheses

z^2+2z+13=0

a = 1; b = 2; c = +13;
Δ = b2-4ac
Δ = 22-4·1·13
Δ = -48
Delta is less than zero, so there is no solution for the equation

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