simplfy
[tex] \sqrt{10 \times \sqrt{8} } [/tex]
option 1
[tex] \sqrt{18} [/tex]
option 2
[tex]4 \sqrt{5} [/tex]
option 3
[tex] \sqrt{80} [/tex]
option 4
[tex]8 \sqrt{10} [/tex]
please help quick
I'm running out of time​