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Add. Write your answer in simplest form. $\newline$ $-3\sqrt{5} + 7\sqrt{5}$

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Add and subtract radical expressions

Full solution

Q. Add. Write your answer in simplest form.

\newline

-3\sqrt{5} + 7\sqrt{5}

Combine like terms: Combine the like terms $-3\sqrt{5}$ and $7\sqrt{5}$ . $\newline$ Identify the like terms which are both terms with $\sqrt{5}$ . $\newline$ $-3\sqrt{5} + 7\sqrt{5} = (-3 + 7)\sqrt{5}$
Simplify expression: Simplify the expression $(-3 + 7)\sqrt{5}$ . $\newline$ Calculate the sum inside the parentheses. $\newline$ $(-3 + 7)\sqrt{5} = 4\sqrt{5}$

More problems from Add and subtract radical expressions

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S E=\frac{\sigma}{\sqrt{n}}

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The given equation relates the standard error,

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