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3\sqrt{2}=\sqrt{18}
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}=3\sqrt{2}
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}-3\sqrt{2}=0
Subtract 3\sqrt{2} from both sides.
0=0
Combine 3\sqrt{2} and -3\sqrt{2} to get 0.
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Compare 0 and 0.
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