Question

Question 3

In the following question, out of the four options, only one is correct. Write the correct answer:

$3^{-2}$ can be written as:
(a) $3^2$
(b) $\frac{1}{3^2}$
(c) $\frac{1}{3^{-2}}$
(d) $-\frac{2}{2}$

Answer 1

Using law of exponents $a^{-m}=\frac{1}{a^m}$
So we can write$3^{-2}as\frac{1}{3^2}$