MCQ
Sum
Cube of \[\frac{- 1}{2}\] is
Options
- \[\frac{1}{8}\]
- \[\frac{1}{16}\]
- \[- \frac{1}{8}\]
- \[\frac{- 1}{16}\]
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Solution
` (-1)/8`
The cube of a number is the number raised to the power of 3. Hence the cube of −1/2 is \[\frac{( - 1 )^3}{2^3}\] → ( (a/b)n = (an)/(bn)
\[= \frac{- 1}{8}\]
Concept: Powers with Negative Exponents
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