2700=3x*x

Solution for 2700=3x*x equation:

2700=3x*x

We move all terms to the left:

2700-(3x*x)=0

We add all the numbers together, and all the variables

-(+3x*x)+2700=0

We get rid of parentheses

-3x*x+2700=0

Wy multiply elements

-3x^2+2700=0

a = -3; b = 0; c = +2700;
Δ = b2-4ac
Δ = 02-4·(-3)·2700
Δ = 32400
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{32400}=180$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-180}{2*-3}=\frac{-180}{-6}
=+30
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+180}{2*-3}=\frac{180}{-6}
=-30
$