To evaluate \(-3^4\), we need to apply the exponent to the base, which in this case is \(-3\). It's important to note that the exponent applies only to the \(3\), not the negative sign.
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Calculate \(3^4\): \[ 3^4 = 3 \times 3 \times 3 \times 3 = 81 \]
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Apply the negative sign: \[ -3^4 = -81 \]
Therefore, \(-3^4 = -81\).