Example 22

*a) Write your answer in the form $a+\sqrt{b}$ where $a$ and $b$ are integers.
*b) Write your answer in the form $a\sqrt{b}-c$ where $a, b$ and $c$ are integers.

Example 23

*a) Write your answer in the form $-a-b\sqrt{c}$ where $a, b$ and $c$ are integers.
*b) Write your answer in the form $-a\sqrt{b}+c$ where $a, b$ and $c$ are integers.

Example 24

*Write your answer in the form $a+b\sqrt{c}$ where $a, b$ and $c$ are integers.

Example 25

*a) Write your answer in the form $a+b\sqrt{c}$ where $a, b$ and $c$ are integers.
*b) Write your answer in the form $a-b\sqrt{c}$ where $a, b$ and $c$ are integers.

Example 26