tolongin dong [tex]3 \sqrt{10} \times \sqrt{18} \div \sqrt{45 } [/tex]

3√10 × √18 ÷ √45
= 3√( 10 × 18 ÷ 45 )
= 3√4 [tex] [/tex]
= 3√2 × 2
= 3 . 2√2
= 6√2