Question

The solution of following is

Answer 1

a^2 + b^2 = 25 ?

Answer 2

If a and b are variables, that is the equation of a circle.
If they are constants then
\[ab=\pm5\]
and
\[a=\pm \frac{5}{b}\]

Answer 3

i think the solution has infinity order pairs (a,b)
it has interval -5 <= (a,b) <= 5

Answer 4

yeah trial errors is the better method here
if a,b are real then it is infinity,
if a, b are integer numbers, the solutions are {(-5,0), (0,-5),(5,0),(0,5),(-4,-3),(-4,3),(-3,-4),(-3,4)}

Answer 5

@RadEn
thank u

Answer 6

you're welcome :)