180=3y*y

Solution for 180=3y*y equation:

180=3y*y

We move all terms to the left:

180-(3y*y)=0

We add all the numbers together, and all the variables

-(+3y*y)+180=0

We get rid of parentheses

-3y*y+180=0

Wy multiply elements

-3y^2+180=0

a = -3; b = 0; c = +180;
Δ = b2-4ac
Δ = 02-4·(-3)·180
Δ = 2160
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{2160}=\sqrt{144*15}=\sqrt{144}*\sqrt{15}=12\sqrt{15}$
$y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-12\sqrt{15}}{2*-3}=\frac{0-12\sqrt{15}}{-6}
=-\frac{12\sqrt{15}}{-6}
=-\frac{2\sqrt{15}}{-1}
$
$y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+12\sqrt{15}}{2*-3}=\frac{0+12\sqrt{15}}{-6}
=\frac{12\sqrt{15}}{-6}
=\frac{2\sqrt{15}}{-1}
$