what are the positive exponents for x^5y^3/x^2y^6

When simplifying the expression (x^5y^3)/(x^2y^6), we subtract the exponents of x and y in the numerator from the exponents of x and y in the denominator.

So, the x term will have an exponent of 5 - 2 = 3 in the numerator.
And the y term will have an exponent of 3 - 6 = -3 in the denominator.

Therefore, the positive exponents for the expression are x^3 and y^(-3) (which can be expressed as 1/y^3).