3888=3x*x

Solution for 3888=3x*x equation:

3888=3x*x

We move all terms to the left:

3888-(3x*x)=0

We add all the numbers together, and all the variables

-(+3x*x)+3888=0

We get rid of parentheses

-3x*x+3888=0

Wy multiply elements

-3x^2+3888=0

a = -3; b = 0; c = +3888;
Δ = b2-4ac
Δ = 02-4·(-3)·3888
Δ = 46656
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{46656}=216$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-216}{2*-3}=\frac{-216}{-6}
=+36
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+216}{2*-3}=\frac{216}{-6}
=-36
$