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Express the following fraction in simplest form, only using positive exponents.

(6j^(-7)n^(-2))/((3j^(5))^(4))
Answer:

Express the following fraction in simplest form, only using positive exponents.\newline6j7n2(3j5)4 \frac{6 j^{-7} n^{-2}}{\left(3 j^{5}\right)^{4}} \newlineAnswer:

Full solution

Q. Express the following fraction in simplest form, only using positive exponents.\newline6j7n2(3j5)4 \frac{6 j^{-7} n^{-2}}{\left(3 j^{5}\right)^{4}} \newlineAnswer:
  1. Write Expression and Identify Negative Exponents: Write down the given expression and identify the negative exponents.\newlineThe given expression is (6j7n2)/((3j5)4)(6j^{-7}n^{-2})/((3j^{5})^{4}).\newlineWe need to simplify this expression and express it with only positive exponents.
  2. Apply Power Rule to Denominator: Apply the power rule to the denominator.\newlineThe power rule states that (am)n=amn(a^m)^n = a^{m*n}. We apply this to the denominator (3j5)4(3j^{5})^{4}.\newline(3j5)4=34×(j5)4=81×j54=81×j20(3j^{5})^{4} = 3^4 \times (j^5)^4 = 81 \times j^{5*4} = 81 \times j^{20}.
  3. Rewrite Expression with Positive Exponents: Rewrite the expression with positive exponents by moving the terms with negative exponents from the numerator to the denominator and vice versa. \newline6j7n26j^{-7}n^{-2} can be rewritten as 6j7n2\frac{6}{j^7n^2}.\newlineNow the expression is 6j7n2\frac{6}{j^7n^2} divided by 81×j2081 \times j^{20}.
  4. Divide Numerators and Denominators: Divide the numerators and the denominators separately.\newlineTo divide fractions, we multiply the first fraction by the reciprocal of the second fraction.\newlineSo, (6j7n2)/(81j20)(\frac{6}{j^7n^2}) / (81 \cdot j^{20}) becomes (6j7n2)(181j20)(\frac{6}{j^7n^2}) \cdot (\frac{1}{81 \cdot j^{20}}).
  5. Multiply Numerators and Denominators: Multiply the numerators and the denominators.\newlineMultiplying the numerators: 6×1=66 \times 1 = 6.\newlineMultiplying the denominators: (j7n2)×(81×j20)=81×j(7+20)×n2=81×j27×n2(j^7n^2) \times (81 \times j^{20}) = 81 \times j^{(7+20)} \times n^2 = 81 \times j^{27} \times n^2.\newlineNow the expression is 681×j27×n2\frac{6}{81 \times j^{27} \times n^2}.
  6. Simplify Fraction by Reducing Common Factors: Simplify the fraction by reducing common factors. The number 66 is a factor of 8181, so we can simplify the fraction by dividing both the numerator and the denominator by 66. 681\frac{6}{81} simplifies to 113.5\frac{1}{13.5} (since 681=113.5\frac{6}{81} = \frac{1}{13.5}). Now the expression is 1(13.5j27n2)\frac{1}{(13.5 \cdot j^{27} \cdot n^2)}.

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