I cannot do this!
Number Theory
Level
5
\(x\) and \(y\) are positive integers which satisfy:
\(4x^2-y^2=315\)
Suppose all of its solution can be stated in the form \( (x,y) = (x_i, y_i) \).
What is the value of \( \sum y_i - \sum x_i \)?
by
Mehul Chaturvedi