title: C# Can it solve polynomial equations?
body: <p>For example, i'm trying to solve </p>
  
  <pre><code>((x-4)^2 + (y-1)^2) - ((x-4)^2 + (y-4)^2) = 9
  </code></pre>
  
  <p>the answer is: <code>y = 4</code></p>
  
  <p>However, how do i use C# to solve this? </p>
  
  <p>Ultimately, the program i'm trying to build uses 2 known points to find a missing 3D point, by hand i got this answered, it's just that i don't know how C# handles things like 3x + 2x, etc. but there has to be way otherwise how do we have graphics in computers? graphics uses a lot of trigonometry i assume. </p>
  
  <pre><code>static void Main(string[] args) {
      int y = 3x - 2x;
  }
  </code></pre>