The root number (3) is the denominator. The power (1) is the numerator. Exponential form = ^{}

The root number (7) is the denominator. The power (2) is the numerator. Exponential form = ^{}

The root number (5) is the denominator. The power (1) is the numerator. (8y) is the base. Exponential form = (8y)^{1/5}

The root number (understood 2) is the denominator. The power (3) is the numerator. 8 is the coefficient. Exponential form = ^{}