(20-9)2-3x2=

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Solution for (20-9)2-3x2= equation: 



(20-9)2-3x^2=

We move all terms to the left:

(20-9)2-3x^2-()=0

We add all the numbers together, and all the variables

-3x^2+112-()=0

We add all the numbers together, and all the variables

-3x^2=0

a = -3; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-3)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{-6}=0$

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