If \(a\) and \(b\) are positive integers, what is the value of \(a - b?\)

[Vincen]

If \(a\) and \(b\) are positive integers, what is the value of \(a - b?\)

(1) \(x^a=y^b+y^b+y^b\)

(2) \(x^a=y^b+y^b+y^b+y^b\)

Answer: E

Source: Manhattan GMAT