3x^2=115

Solution for 3x^2=115 equation:

3x^2=115

We move all terms to the left:

3x^2-(115)=0

a = 3; b = 0; c = -115;
Δ = b2-4ac
Δ = 02-4·3·(-115)
Δ = 1380
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{1380}=\sqrt{4*345}=\sqrt{4}*\sqrt{345}=2\sqrt{345}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-2\sqrt{345}}{2*3}=\frac{0-2\sqrt{345}}{6}
=-\frac{2\sqrt{345}}{6}
=-\frac{\sqrt{345}}{3}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+2\sqrt{345}}{2*3}=\frac{0+2\sqrt{345}}{6}
=\frac{2\sqrt{345}}{6}
=\frac{\sqrt{345}}{3}
$