Learn How to Multiply Two Radical Expression and Simplify

The video tutorial demonstrates how to simplify a radical expression using the product rule for square roots. It explores whether sqrt(15) can be simplified by checking divisibility by square numbers and using prime factorization. The conclusion is that sqrt(15) is already in its simplest form as it cannot be further simplified.

Why can't we simplify sqrt(15) further?

What is the final simplified answer for sqrt(15)?