Question

Evaluate the following expression:

$9^2$

Short answer

The solution of the expression $9^2$is 81.

Step-by-step solution

Step 1. Given information.

The given expression is $9^2$.

Step 2. Write the concept.

If a is any number, then

$a^n=a\times a\times a\times \dots \times a\left(n-\text{times}\right)$

Here n is the power of a.

Take $n=2$.

Then $a^2=a\times a$. Here 2 is the power of a.

Step 3. Solve the expression.

The expression $9^2$can be solved below.

$$\begin{gathered} 9^2=9\times 9 \\ =81 \end{gathered}$$