To simplify the expression \( \frac{1}{z^6} \cdot \frac{1}{z^6} \), you can follow these steps:
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First, rewrite the expression using the multiplication of the fractions: \[ \frac{1}{z^6} \cdot \frac{1}{z^6} = \frac{1 \cdot 1}{z^6 \cdot z^6} \]
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The product of \( z^6 \cdot z^6 \) can be simplified using the property of exponents: \[ z^6 \cdot z^6 = z^{6+6} = z^{12} \]
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Therefore, the expression becomes: \[ \frac{1}{z^{12}} \]
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To write this with a positive exponent, you can rewrite the fraction as: \[ z^{-12} \]
So, the fully simplified form of your original expression \( \frac{1}{z^6} \cdot \frac{1}{z^6} \) is \[ z^{-12}. \]
However, since the problem asks for positive exponents only, you would typically express it as: \[ \frac{1}{z^{12}}. \]
Thus, the final answer in exponent form with positive exponents is: \[ \frac{1}{z^{12}}. \]