To simplify the expression (7^2y^3z^4)^2, we will apply the power of a power rule for exponents:
(7^2y^3z^4)^2 = 7^(2 * 2) * y^(3 * 2) * z^(4 * 2)
Simplifying further:
7^4 * y^6 * z^8
Therefore, the simplified expression is 7^4y^6z^8.
4. (7^2y^3z^4)^2
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