6b^2+216=-72b

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Solution for 6b^2+216=-72b equation: 



6b^2+216=-72b

We move all terms to the left:

6b^2+216-(-72b)=0

We get rid of parentheses

6b^2+72b+216=0

a = 6; b = 72; c = +216;
Δ = b2-4ac
Δ = 722-4·6·216
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$b=\frac{-b}{2a}=\frac{-72}{12}=-6$

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