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प्रश्न
For a non-zero rational number a, a7 ÷ a12 is equal to
विकल्प
a5
a−19
a−5
a19
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उत्तर
a−5
`a^mdiva^n=a^(m-n)`
Hence,
`a^7diva^12=a^(7-12)=a^(-5)`
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संबंधित प्रश्न
Find the value of `{((-2)/3)^(-2)}^2`
Find the value of m for which 5m ÷5−3 = 55.
Write the following in exponential form:
\[\left( \frac{2}{5} \right)^{- 2} \times \left( \frac{2}{5} \right)^{- 2} \times \left( \frac{2}{5} \right)^{- 2}\]
Express the following as a rational number in the form \[\frac{p}{q}:\]
Simplify:
Find x, if \[\left( \frac{1}{4} \right)^{- 4} \times \left( \frac{1}{4} \right)^{- 8} = \left( \frac{1}{4} \right)^{- 4x}\]
If \[x = \left( \frac{4}{5} \right)^{- 2} \div \left( \frac{1}{4} \right)^2\], find the value of x−1.
Simplify and express the result in power notation with positive exponent.
`(−3)^4 × (5/3)^4`
