Question

Multiply: 5 root 2 and 3 root 18



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Answer 1

$5 \sqrt{2} \times 3 \sqrt{18} \\ 5 \sqrt{2} \times 3 \sqrt{2 \times 3 \times 3} \\ 5 \sqrt{2} \times 3 \times 3 \sqrt{2} \\ 5 \sqrt{2} \times 9 \sqrt{2} \\ 45 \sqrt{2} \: \: answer$