3x2=222

Solution for 3x2=222 equation:

3x^2=222

We move all terms to the left:

3x^2-(222)=0

a = 3; b = 0; c = -222;
Δ = b2-4ac
Δ = 02-4·3·(-222)
Δ = 2664
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:

$\sqrt{\Delta}=\sqrt{2664}=\sqrt{36*74}=\sqrt{36}*\sqrt{74}=6\sqrt{74}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-6\sqrt{74}}{2*3}=\frac{0-6\sqrt{74}}{6}
=-\frac{6\sqrt{74}}{6}
=-\sqrt{74}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+6\sqrt{74}}{2*3}=\frac{0+6\sqrt{74}}{6}
=\frac{6\sqrt{74}}{6}
=\sqrt{74}
$