Chapter 1, Problem 19SGR

To determine

To Evaluate: The expression $15+3^2-6$

Answer to Problem 19SGR

  $15+3^2-6=19$

Explanation of Solution

Given information:

The expression $15+3^2-6$

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

  $15+3^2-6$

Solving the exponent

  $\begin{array}{l}15+3^2-6=15+3\times 3-6\\ 15+3^2-6=15+9-6\\ \text{Solving the addition sign}\\ 15+3^2-6=25-6\\ \text{On simplifying}\\ 15+3^2-6=19\end{array}$

Conclusion:

  $15+3^2-6=19$