Question

What is the geometric mean of 7 and 13?

I got up to this step but I don't understand what it's telling me to do in the last step. please help​

Answer 1

√91 ≈ 9.5394

Explanation:

Take the square root of 91 to find the value of x. There is no simpler radical form. You can write it as ...

x = √91 . . . . . . . simplest radical form

or as

x ≈ 9.5394 . . . . an approximation of the irrational root