# What is the square root of 15 plus the square root of 15?

Sep 20, 2015

Answer= $2. \sqrt{15}$

#### Explanation:

Let $C = A + B$

Assume A=B and therefore substitute A instead of B

""color(white)(a)=>C=A+A

""color(white)(a)=>C=2A

From data given in the question $A = B = \sqrt{15}$

Then $C = 2 \sqrt{15}$