a2=81a2=81

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Solution for a2=81a2=81 equation: 



a2=81a^2=81

We move all terms to the left:

a2-(81a^2)=0

determiningTheFunctionDomain
-81a^2+a2=0

We add all the numbers together, and all the variables

-80a^2=0

a = -80; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-80)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$a=\frac{-b}{2a}=\frac{0}{-160}=0$

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