The Answers is 15 if you look it up you will get<span> Answers.</span>
Okay, so, I don’t know what I’m doing here or if this is valid, but I believe in you.
(ax-by)²+(bx+ay)²
a²x²-2axby+b²y²+b²x²+2axby+a²x²
a²x²+b²x²+b²y²+a²x²
(a²+b²)x²+(a²+b²)y²
(a²+b²)(x²+y²)
