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02-02-2017
Mathematics

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Add or subtract if possible.

[tex]3 \sqrt{20x} + 8 \sqrt{45x} - 4 \sqrt{5x}[/tex]

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LammettHash LammettHash

02-02-2017

[tex]3\sqrt{20x}+8\sqrt{45x}-4\sqrt{5x}=3\sqrt{5\times2^2x}+8\sqrt{3^2\times5x}-4\sqrt{5x}=6\sqrt{5x}+24\sqrt{5x}-4\sqrt{5x}=26\sqrt{5x}[/tex]

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