49n^2-84n=-36

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Solution for 49n^2-84n=-36 equation: 



49n^2-84n=-36

We move all terms to the left:

49n^2-84n-(-36)=0

We add all the numbers together, and all the variables

49n^2-84n+36=0

a = 49; b = -84; c = +36;
Δ = b2-4ac
Δ = -842-4·49·36
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$n=\frac{-b}{2a}=\frac{84}{98}=6/7$

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