Rewrite the expression using the negative exponent rule .

Combine and .

Combine and .

Change the sign of the exponent by rewriting the base as its reciprocal.

Apply the product rule to .

Apply the product rule to .

Apply the power rule and multiply exponents, .

Multiply by .

Raise to the power of .

Multiply the exponents in .

Apply the power rule and multiply exponents, .

Multiply by .

Simplify (3x^-2y^4)^-3