Apply the product rule to .

Multiply the exponents in .

Apply the power rule and multiply exponents, .

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Multiply the exponents in .

Apply the power rule and multiply exponents, .

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Multiply by .

Factor out of .

Cancel the common factors.

Multiply by .

Cancel the common factor.

Rewrite the expression.

Divide by .

Simplify ((r^(1/3)s^(2/7))^21)/(r^2)