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Add. Write your answer in simplest form. $\newline$ $9\sqrt{2} + 3\sqrt{2}$

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Add and subtract radical expressions

Full solution

Q. Add. Write your answer in simplest form.

\newline

9\sqrt{2} + 3\sqrt{2}

Combine like terms: Combine like terms by adding the coefficients of $\sqrt{2}$ . $9\sqrt{2} + 3\sqrt{2} = (9 + 3)\sqrt{2}$
Perform addition: Perform the addition of the coefficients. $\newline$ $(9 + 3)\sqrt{2} = 12\sqrt{2}$

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