Chapter 1.1, Problem 6TI

Use the order of operations to evaluate each of the following expressions.

$a.\sqrt{5^2-4^2}+7{(5-4)}^2$

$b.1+\frac{7.5-8.4}{9-6}$

$c.\left|1.8-4.3\right|+0.4\sqrt{15+10}$

$d.\frac{1}{2}[{5.3}^2-7^2]+\frac{1}{3}\cdot 9^2$

$e.[{(3-8)}^2-4]-(3-8)$