5k^2=-10k-5

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Solution for 5k^2=-10k-5 equation: 



5k^2=-10k-5

We move all terms to the left:

5k^2-(-10k-5)=0

We get rid of parentheses

5k^2+10k+5=0

a = 5; b = 10; c = +5;
Δ = b2-4ac
Δ = 102-4·5·5
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$k=\frac{-b}{2a}=\frac{-10}{10}=-1$

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