Question

sqrt of 3x times sqrt15x

Answer 1

\(\bf \sqrt{3}\cdot \sqrt{15}\qquad {\color{brown}{ 15\to 3\cdot 5}}\quad thus
\\ \quad \\
\sqrt{3}\cdot \sqrt{15}\implies \sqrt{3}\cdot \sqrt{{\color{brown}{ 3\cdot 5}}}\implies \sqrt{3}\cdot \sqrt{3}\cdot \sqrt{5}\implies ?\)