Q. Express the following fraction in simplest form, only using positive exponents.(3j5)46j−7n−2Answer:
Write Expression and Identify Negative Exponents: Write down the given expression and identify the negative exponents.The given expression is (6j−7n−2)/((3j5)4).We need to simplify this expression and express it with only positive exponents.
Apply Power Rule to Denominator: Apply the power rule to the denominator.The power rule states that (am)n=am∗n. We apply this to the denominator (3j5)4.(3j5)4=34×(j5)4=81×j5∗4=81×j20.
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. 6j−7n−2 can be rewritten as j7n26.Now the expression is j7n26 divided by 81×j20.
Divide Numerators and Denominators: Divide the numerators and the denominators separately.To divide fractions, we multiply the first fraction by the reciprocal of the second fraction.So, (j7n26)/(81⋅j20) becomes (j7n26)⋅(81⋅j201).
Multiply Numerators and Denominators: Multiply the numerators and the denominators.Multiplying the numerators: 6×1=6.Multiplying the denominators: (j7n2)×(81×j20)=81×j(7+20)×n2=81×j27×n2.Now the expression is 81×j27×n26.
Simplify Fraction by Reducing Common Factors: Simplify the fraction by reducing common factors. The number 6 is a factor of 81, so we can simplify the fraction by dividing both the numerator and the denominator by 6. 816 simplifies to 13.51 (since 816=13.51). Now the expression is (13.5⋅j27⋅n2)1.
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