Two positive integers a and b such that a+b=`a/b+b/a`.what is the value of `a^2+b^2`

Positive integers a and b are such that a+b=a/b+b/a What is the value of a^2 +b^2 ?

If a and b be two positive integers (agtb) such that a^(2)-b^(2)=399 , then find the value of a and b .

For any two positive integers 'a' and b, what is the value of HCF (a,b), LCM (a, b)?

If a, b represents two distinct positive integers and thus (aa)^b = abba is a valid relation. Then the value of (a^b . b^a + b^a .a^b) is :

Each of the two positive integers a and b ends with the digit 2 . With what number does a - b end?