#587 · Number Theory · Diophantine equations

A difference of squares

How many pairs of positive integers $(x, y)$ satisfy $x^{2} - y^{2} = 15$ ?

~3 minAnswer checked instantlyDiophantine equations

Stuck? A gentle nudge

Something off?

Workspace

Your answer

Loading the math keyboard…

Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.