Chapter 1.2, Problem 39PPS

To determine

To Evaluate: The expression $4^2$ .

Answer to Problem 39PPS

  $4^2=16$

Explanation of Solution

Given information:

The expression $4^2$

Concept and Formula Used:

Rule of exponent and addition and subtraction.

  $a^n=a\times a\times a\times \mathrm{..................}n\text{ times}\text{.}$

BODMAS rule

Calculation:

The given expression is $4^2$ . Using $a^n=a\times a\times a\times \mathrm{..................}n\text{ times}$ , we get

  $4\times 4=16$

Conclusion:

  $4^2=16$