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Select the equivalent expression.

(3^(-8)*7^(3))^(-2)=?
Choose 1 answer:
(A) 
(7^(6))/(3^(16))
(B) 
21^(10)
(c) 
3^(16)*7^(-6)

Select the equivalent expression.\newline(3873)2=(3^{-8}\cdot7^{3})^{-2}=?\newlineChoose 11 answer:\newline(A) 76316\frac{7^{6}}{3^{16}}\newline(B) 211021^{10}\newline(C) 316763^{16}\cdot7^{-6}

Full solution

Q. Select the equivalent expression.\newline(3873)2=(3^{-8}\cdot7^{3})^{-2}=?\newlineChoose 11 answer:\newline(A) 76316\frac{7^{6}}{3^{16}}\newline(B) 211021^{10}\newline(C) 316763^{16}\cdot7^{-6}
  1. Apply product rule: Apply the power of a product rule, which states that (ab)n=an×bn(ab)^n = a^n \times b^n, to the given expression (38×73)2(3^{-8} \times 7^{3})^{-2}.\newline(38×73)2=(38)2×(73)2(3^{-8} \times 7^{3})^{-2} = (3^{-8})^{-2} \times (7^{3})^{-2}
  2. Apply power of a power rule: Apply the power of a power rule, which states that (am)n=a(mn)(a^m)^n = a^{(m*n)}, to both parts of the expression.\newline(3(8))(2)=3((8)(2))=316(3^{(-8)})^{(-2)} = 3^{((-8)*(-2))} = 3^{16}\newline(7(3))(2)=7((3)(2))=76(7^{(3)})^{(-2)} = 7^{((3)*(-2))} = 7^{-6}
  3. Combine results: Combine the results from Step 22 to form the final expression. 316×763^{16} \times 7^{-6}
  4. Rewrite as division: Recognize that 767^{-6} is the reciprocal of 767^{6}, which means we can rewrite the expression as a division.\newline316×76=316/763^{16} \times 7^{-6} = 3^{16} / 7^{6}
  5. Check answer choices: Check the answer choices to see which one matches the expression we have derived.\newline(A) (76)/(316)(7^{6})/(3^{16}) is not correct because the bases are flipped and the exponents are in the wrong places.\newline(B) 211021^{10} is not correct because it does not represent the bases 33 and 77 separately and the exponents are incorrect.\newline(C) 316763^{16}\cdot7^{-6} is correct because it matches the expression we have derived.

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