PLEASE HELP 20 POINTS

Answer:[tex]x^7\sqrt{x}[/tex]Explanation:[tex]\sqrt{x^{15}}[/tex]apply exponent rule:[tex]\sqrt{x^{14}x}[/tex]    apply radical rule:[tex]\sqrt{x^{14}}\sqrt{x}[/tex]simplify more:[tex]\sqrt{x^{7*2}}\sqrt{x}[/tex]final answer:[tex]x^7\sqrt{x}[/tex]