MCQ
$3^{-2}$ can be written as:
- A$3^2$
- ✓$\frac{1}{3^2}$
- C$\frac{1}{3^{-2}}$
- D$-\frac{2}{3}$
✓
Answer
Correct option: B.
$\frac{1}{3^2}$
B. $\frac{1}{3^2}$
Solution:
Using law of exponents, $\text{a}^{-\text{m}}=\frac{1}{\text{a}^\text{m}}$ [ $\because$ a is non-zero integer]
So, we can write $3^{-2}$ as $\frac{1}{3^2}$.
Solution:
Using law of exponents, $\text{a}^{-\text{m}}=\frac{1}{\text{a}^\text{m}}$ [ $\because$ a is non-zero integer]
So, we can write $3^{-2}$ as $\frac{1}{3^2}$.
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