Answer:

Step-by-step explanation:
A triangle's hypotenuse is the side opposite of the 90 degree angle, which is x. And the other two sides are the two legs of the triangle.
The pythagorean theorem tells us:

Where c is the hypotenuse and a,b are the two legs
Plugging the information into the formula, gives us:

<u>*Note</u>: We used the property of radical
to simplify