Answer:
60
Step-by-step explanation:
using the rule of radicals
[tex]\sqrt{a}[/tex] × [tex]\sqrt{b}[/tex] = [tex]\sqrt{ab}[/tex]
given
3[tex]\sqrt{2}[/tex] × 5[tex]\sqrt{8}[/tex]
= 3 × 5 × [tex]\sqrt{2}[/tex] × [tex]\sqrt{8}[/tex]
= 15 × [tex]\sqrt{16}[/tex]
= 15 × 4
= 60
