5x^2+21x+9=55x2+21x+9=5

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Solution for 5x^2+21x+9=55x2+21x+9=5 equation: 



5x^2+21x+9=55x^2+21x+9=5

We move all terms to the left:

5x^2+21x+9-(55x^2+21x+9)=0

We get rid of parentheses

5x^2-55x^2+21x-21x-9+9=0

We add all the numbers together, and all the variables

-50x^2=0

a = -50; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-50)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{-100}=0$

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