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3\sqrt{2}\sqrt{0\times 0\times 0\times 8}
Factor 18=3^{2}\times 2. Rewrite the square root of the product \sqrt{3^{2}\times 2} as the product of square roots \sqrt{3^{2}}\sqrt{2}. Take the square root of 3^{2}.
3\sqrt{2}\sqrt{0\times 0\times 8}
Multiply 0 and 0 to get 0.
3\sqrt{2}\sqrt{0\times 8}
Multiply 0 and 0 to get 0.
3\sqrt{2}\sqrt{0}
Multiply 0 and 8 to get 0.
3\sqrt{2}\times 0
Calculate the square root of 0 and get 0.
0\sqrt{2}
Multiply 3 and 0 to get 0.
0
Anything times zero gives zero.
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