Which expression is equivalent to

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

Recall that when you raise a power to another power, you multiply the exponents.

In this case, we have (3x^3y^-4)^-2.

To simplify, we first distribute the exponent -2 to each term inside the parentheses:

(3^-2)(x^3·-2)(y^-4·-2).

Next, we simplify further:

(1/3^2)(x^6)(y^8).

Finally, we simplify even further:

1/9x^6y^8.

Therefore, the expression (3x^3y^-4)^-2 is equivalent to 1/9x^6y^8.