### Home > INT2 > Chapter 5 > Lesson 5.2.3 > Problem5-91

5-91.

Calculate the value of each expression below. Then compare your answers to those in problem 5-90. What do you notice?

1. $\frac { - 6 + \sqrt { 6 ^ { 2 } - ( 4 ) ( 1 ) ( - 40 ) } } { 2\: \cdot\: 1 }$

$\frac{-6+\sqrt{36+160}}{2}$

$\frac{-6+\sqrt{196}}{2}$

$\frac{-6+14}{2}$

$\frac{8}{2}$

$4$

1. $\frac { - 6 - \sqrt { 6 ^ { 2 } - ( 4 ) ( 1 ) ( - 40 ) } } { 2\: \cdot \:1 }$

Follow the steps in part (a).

1. $\frac { - 13 - \sqrt { 13 ^ { 2 } - ( 4 ) ( 2 ) ( - 24 ) } } { 2 \:\cdot\: 2 }$

$−8$

1. $\frac { - 13 + \sqrt { 13 ^ { 2 } - ( 4 ) ( 2 ) ( - 24 ) } } { 2 \:\cdot\: 2 }$

Follow the steps in part (a).

The answers you get for parts (a) through (d) will match those found in problem 5-90.