Y2+x2=225

Solution for Y2+x2=225 equation:

2+Y2=225

We move all terms to the left:

2+Y2-(225)=0

We add all the numbers together, and all the variables

Y^2-223=0

a = 1; b = 0; c = -223;
Δ = b2-4ac
Δ = 02-4·1·(-223)
Δ = 892
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$Y_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$Y_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{892}=\sqrt{4*223}=\sqrt{4}*\sqrt{223}=2\sqrt{223}$
$Y_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-2\sqrt{223}}{2*1}=\frac{0-2\sqrt{223}}{2}
=-\frac{2\sqrt{223}}{2}
=-\sqrt{223}
$
$Y_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+2\sqrt{223}}{2*1}=\frac{0+2\sqrt{223}}{2}
=\frac{2\sqrt{223}}{2}
=\sqrt{223}
$