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Add. Write your answer in simplest form. $\newline$ $-8\sqrt{5} + 4\sqrt{5}$

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Add and subtract radical expressions

Full solution

Q. Add. Write your answer in simplest form.

\newline

-8\sqrt{5} + 4\sqrt{5}

Combine like terms: Combine the like terms $-8 \sqrt{5}$ and $4 \sqrt{5}$ . Identify the like terms which are the square root terms with the same radicand (number under the square root), in this case, $\sqrt{5}$ . $-8 \sqrt{5} + 4 \sqrt{5} = (-8 + 4) \sqrt{5}$
Identify like terms: Simplify the expression $(-8 + 4) \sqrt{5}$ . Perform the addition within the parentheses. $(-8 + 4) \sqrt{5} = -4 \sqrt{5}$

More problems from Add and subtract radical expressions

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Round your final answer to the nearest kilometer.

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Question

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

\newline

The given equation relates the standard error,

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n=\left(\frac{\sigma}{S E}\right)^{2}

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n=\frac{\sigma^{2}}{S E}

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

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S(t)=500 \cdot e^{-0.25 t}

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Question

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Carlos has taken an initial dose of a prescription medication.

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The relationship between the elapsed time

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Round your answer, if necessary, to the nearest hundredth.

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Question

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Question

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