Use the power rule to combine exponents.

To write as a fraction with a common denominator, multiply by .

To write as a fraction with a common denominator, multiply by .

Multiply and .

Multiply by .

Multiply and .

Multiply by .

Combine the numerators over the common denominator.

Multiply by .

Multiply by .

Add and .

Simplify u^(2/5)u^(4/7)