81a2+-49=0

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Solution for 81a2+-49=0 equation: 



81a^2+-49=0

We add all the numbers together, and all the variables

81a^2=0

a = 81; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·81·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$a=\frac{-b}{2a}=\frac{0}{162}=0$

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