(8i+8)(9i+9)=0

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Solution for (8i+8)(9i+9)=0 equation: 



(8i+8)(9i+9)=0

We multiply parentheses ..

(+72i^2+72i+72i+72)=0

We get rid of parentheses

72i^2+72i+72i+72=0

We add all the numbers together, and all the variables

72i^2+144i+72=0

a = 72; b = 144; c = +72;
Δ = b2-4ac
Δ = 1442-4·72·72
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$i=\frac{-b}{2a}=\frac{-144}{144}=-1$

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