Provide me an example about how to use the pythagorean theorem
Let's say you want to find the length of the hypotenuse of a right triangle where the lengths of the two sides are 4 units and 5 units.

Using the Pythagorean Theorem, you can calculate the length of the hypotenuse as follows:

c^2 = a^2 + b^2

Where c is the length of the hypotenuse, a is 4 units, and b is 5 units.

c^2 = 4^2 + 5^2
c^2 = 16 + 25
c^2 = 41
c = √41
c = 6.4 units

So the length of the hypotenuse is 6.4 units.
What does the ^ character mean in c^2 ?
The character ^ is used to indicate powers, here c^2 is c to the power of two i.e. c squared. Typically a superscript is used (where the second part is in a smaller font to the upper right of the first part), but because of text entry limitations the character ^ is often used as a replacement.