Advertisements
Advertisements
Question
For a non-zero rational number a, a7 ÷ a12 is equal to
Options
a5
a−19
a−5
a19
Advertisements
Solution
a−5
`a^mdiva^n=a^(m-n)`
Hence,
`a^7diva^12=a^(7-12)=a^(-5)`
APPEARS IN
RELATED QUESTIONS
Simplify:
Simplify:
\[\left\{ 3^{- 1} \times 4^{- 1} \right\}^{- 1} \times 5^{- 1}\]
Express the following rational numbers with a negative exponent:
By what number should 5−1 be multiplied so that the product may be equal to (−7)−1?
Find x, if
if \[x = \left( \frac{3}{2} \right)^2 \times \left( \frac{2}{3} \right)^{- 4}\], find the value of x−2.
The multiplicative inverse of 1010 is ______.
The expression for 4–3 as a power with the base 2 is 26.
The cells of a bacteria double itself every hour. How many cells will there be after 8 hours, if initially we start with 1 cell. Express the answer in powers.
Simplify and express the result in power notation with positive exponent.
2−3 × (−7)−3
