9900x^2+200x-100=0

Solution for 9900x^2+200x-100=0 equation:

9900x^2+200x-100=0

a = 9900; b = 200; c = -100;
Δ = b2-4ac
Δ = 2002-4·9900·(-100)
Δ = 4000000
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{4000000}=2000$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(200)-2000}{2*9900}=\frac{-2200}{19800}
=-1/9
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(200)+2000}{2*9900}=\frac{1800}{19800}
=1/11
$