Question

Number of non-negative integral pairs (x,y)
for which x2 - y2 = 13​

Answer 1

Explanation:

can be written as (x+y) (x+y-1)=3xy

at x=0---> y=0,1

x=1----> y=2

x=2----> y=1,2

Answer 2

ANSWER:

$\blue{Plz \: see \: the \: solution }$