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Subtract. Write your answer in simplest form. $\newline$ $10\sqrt{5} - 7\sqrt{5}$

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Add and subtract radical expressions

Full solution

Q. Subtract. Write your answer in simplest form.

\newline

10\sqrt{5} - 7\sqrt{5}

Combine coefficients: $10 \sqrt{5} - 7 \sqrt{5}$ $\newline$ Identify the expression that combines the coefficients. $\newline$ $10 \sqrt{5} - 7 \sqrt{5} = (10 - 7) \sqrt{5}$
Simplify expression: Simplify: $(10 - 7) \sqrt{5}$ $(10 - 7) \sqrt{5} = 3 \sqrt{5}$

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