(z+9)(z+9)=-64

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Solution for (z+9)(z+9)=-64 equation: 



(z+9)(z+9)=-64

We move all terms to the left:

(z+9)(z+9)-(-64)=0

We add all the numbers together, and all the variables

(z+9)(z+9)+64=0

We multiply parentheses ..

(+z^2+9z+9z+81)+64=0

We get rid of parentheses

z^2+9z+9z+81+64=0

We add all the numbers together, and all the variables

z^2+18z+145=0

a = 1; b = 18; c = +145;
Δ = b2-4ac
Δ = 182-4·1·145
Δ = -256
Delta is less than zero, so there is no solution for the equation

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