x^2+0.8x=0.09x2+0.8x=0.09

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Solution for x^2+0.8x=0.09x2+0.8x=0.09 equation: 



x^2+0.8x=0.09x^2+0.8x=0.09

We move all terms to the left:

x^2+0.8x-(0.09x^2+0.8x)=0

We get rid of parentheses

x^2-0.09x^2+0.8x-0.8x=0

We add all the numbers together, and all the variables

0.91x^2=0

a = 0.91; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·0.91·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{1.82}=0$

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