Find the Arithmetic Mean (A.M) between √5 + 4 and √5 − 4.

Find the Arithmetic Mean (A.M) between √5 + 4 and √5 − 4.

Explanation

A.M = (a + b) / 2


Here,  

a = √5 + 4  

b = √5 − 4


Now add:  

(√5 + 4) + (√5 − 4) = 2√5


Now divide by 2:  

A.M = 2√5 / 2 = √5