QuestionAugust 26, 2025

Simplify. 8^-7cdot 8^5 Enter the correct numbers in the boxes to simplify the expression. 8^-7cdot 8^5 =(square )/(square )

Simplify. 8^-7cdot 8^5 Enter the correct numbers in the boxes to simplify the expression. 8^-7cdot 8^5 =(square )/(square )
Simplify.
8^-7cdot 8^5
Enter the correct numbers in the boxes to simplify the expression.
8^-7cdot 8^5
=(square )/(square )

Solution
4.1(381 votes)

Answer

\frac{1}{64} Explanation 1. Apply the Product of Powers Rule Use the rule a^m \cdot a^n = a^{m+n} to combine the exponents: 8^{-7} \cdot 8^{5} = 8^{-7+5}. 2. Simplify the Exponent Calculate the exponent: -7 + 5 = -2. So, 8^{-7+5} = 8^{-2}. 3. Convert to Fraction Use the definition of negative exponents: a^{-n} = \frac{1}{a^n}. Thus, 8^{-2} = \frac{1}{8^2}.

Explanation

1. Apply the Product of Powers Rule<br /> Use the rule $a^m \cdot a^n = a^{m+n}$ to combine the exponents: $8^{-7} \cdot 8^{5} = 8^{-7+5}$.<br />2. Simplify the Exponent<br /> Calculate the exponent: $-7 + 5 = -2$. So, $8^{-7+5} = 8^{-2}$.<br />3. Convert to Fraction<br /> Use the definition of negative exponents: $a^{-n} = \frac{1}{a^n}$. Thus, $8^{-2} = \frac{1}{8^2}$.
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