4n^2-8=-74n^2-8=-7

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Solution for 4n^2-8=-74n^2-8=-7 equation: 



4n^2-8=-74n^2-8=-7

We move all terms to the left:

4n^2-8-(-74n^2-8)=0

We get rid of parentheses

4n^2+74n^2+8-8=0

We add all the numbers together, and all the variables

78n^2=0

a = 78; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·78·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$n=\frac{-b}{2a}=\frac{0}{156}=0$

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