225=x*2x/2

Solution for 225=x*2x/2 equation:

225=x*2x/2

We move all terms to the left:

225-(x*2x/2)=0

We add all the numbers together, and all the variables

-(+x*2x/2)+225=0

We get rid of parentheses

-x*2x/2+225=0

We multiply all the terms by the denominator


-x*2x+225*2=0

We add all the numbers together, and all the variables

-x*2x+450=0

Wy multiply elements

-2x^2+450=0

a = -2; b = 0; c = +450;
Δ = b2-4ac
Δ = 02-4·(-2)·450
Δ = 3600
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{3600}=60$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-60}{2*-2}=\frac{-60}{-4}
=+15
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+60}{2*-2}=\frac{60}{-4}
=-15
$