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प्रश्न
For a non-zero rational number a, a7 ÷ a12 is equal to
पर्याय
a5
a−19
a−5
a19
MCQ
बेरीज
उत्तर
a−5
`a^mdiva^n=a^(m-n)`
Hence,
`a^7diva^12=a^(7-12)=a^(-5)`
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संबंधित प्रश्न
Express the following as a rational number of the form \[\frac{p}{q},\] where p and q are integers and q ≠ 0.
\[\left( \frac{1}{2} \right)^{- 5}\]
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\[\left\{ \left( \frac{1}{3} \right)^{- 1} - \left( \frac{1}{4} \right)^{- 1} \right\}^{- 1}\]
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\[\left( 4^{- 1} - 5^{- 1} \right) \div 3^{- 1}\]
Express the following rational numbers with a positive exponent:
\[\left( \frac{5}{4} \right)^{- 3}\]
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\[\left\{ \left( \frac{4}{3} \right)^{- 3} \right\}^{- 4}\]
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\[\left[ \left\{ \left( \frac{- 1}{4} \right)^2 \right\}^{- 2} \right]^{- 1}\]
By what number should (−15)−1 be divided so that the quotient may be equal to (−5)−1?
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