225x2=9

Solution for 225x2=9 equation:

225x^2=9

We move all terms to the left:

225x^2-(9)=0

a = 225; b = 0; c = -9;
Δ = b2-4ac
Δ = 02-4·225·(-9)
Δ = 8100
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{8100}=90$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-90}{2*225}=\frac{-90}{450}
=-1/5
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+90}{2*225}=\frac{90}{450}
=1/5
$