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2\times 2\sqrt{2}+3\sqrt{18}-2\sqrt{50}
Factor 8=2^{2}\times 2. Rewrite the square root of the product \sqrt{2^{2}\times 2} as the product of square roots \sqrt{2^{2}}\sqrt{2}. Take the square root of 2^{2}.
4\sqrt{2}+3\sqrt{18}-2\sqrt{50}
Multiply 2 and 2 to get 4.
4\sqrt{2}+3\times 3\sqrt{2}-2\sqrt{50}
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}.
4\sqrt{2}+9\sqrt{2}-2\sqrt{50}
Multiply 3 and 3 to get 9.
13\sqrt{2}-2\sqrt{50}
Combine 4\sqrt{2} and 9\sqrt{2} to get 13\sqrt{2}.
13\sqrt{2}-2\times 5\sqrt{2}
Factor 50=5^{2}\times 2. Rewrite the square root of the product \sqrt{5^{2}\times 2} as the product of square roots \sqrt{5^{2}}\sqrt{2}. Take the square root of 5^{2}.
13\sqrt{2}-10\sqrt{2}
Multiply -2 and 5 to get -10.
3\sqrt{2}
Combine 13\sqrt{2} and -10\sqrt{2} to get 3\sqrt{2}.