0=450-18x2

Solution for 0=450-18x2 equation:

0=450-18x^2

We move all terms to the left:

0-(450-18x^2)=0

We add all the numbers together, and all the variables

-(450-18x^2)=0

We get rid of parentheses

18x^2-450=0

a = 18; b = 0; c = -450;
Δ = b2-4ac
Δ = 02-4·18·(-450)
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*18}=\frac{-180}{36}
=-5
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+180}{2*18}=\frac{180}{36}
=5
$