0=216x-12x2

Solution for 0=216x-12x2 equation:

0=216x-12x^2

We move all terms to the left:

0-(216x-12x^2)=0

We add all the numbers together, and all the variables

-(216x-12x^2)=0

We get rid of parentheses

12x^2-216x=0

a = 12; b = -216; c = 0;
Δ = b2-4ac
Δ = -2162-4·12·0
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{-(-216)-216}{2*12}=\frac{0}{24}
=0
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-216)+216}{2*12}=\frac{432}{24}
=18
$