Answer:
[tex]a^2\sqrt{15}[/tex]
Step-by-step explanation:
For any m, a, b:
[tex]\sqrt[m]{a \times b} = \sqrt[m]a\times\sqrt[m]b[/tex]
Therefore,
[tex]\sqrt{15a^4} = \sqrt{15}\times\sqrt{a^4} = a^2\sqrt{15}[/tex]
