Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.
Please verify your account before proceeding.
Kathryn Kingham
Find the geometric mean of (π β 19) and (π + 19).
Find the geometric mean of π minus 19 and π plus 19.
The geometric mean of two values π and π is the square root of π times π, which means we need to multiply π minus 19 times π plus 19 and then take the square root of that value.
Our first step will start by multiplying. We need to FOIL these two expressions. π times π equals π squared. π times 19 equals 19π. Negative 19 times π equals negative 19π. And negative 19 times 19 equals negative 361.
This middle term says 19π minus 19π and that equals zero. They cancel each other out. We now have π squared minus 361. And we must take the square root of that value.
And our geometric mean is then the square root of π squared minus 361.
Donβt have an account? Sign Up
