QuestionAugust 26, 2025

Simplify the radical below. -sqrt [3](32)-2sqrt [3](108) square

Simplify the radical below. -sqrt [3](32)-2sqrt [3](108) square
Simplify the radical below.
-sqrt [3](32)-2sqrt [3](108)
square

Solution
4.0(365 votes)

Answer

-8\sqrt[3]{4} Explanation 1. Simplify each cube root -\sqrt[3]{32} = -\sqrt[3]{2^5} = -2^{5/3} = -2 \cdot 2^{2/3} = -2\sqrt[3]{4}. -2\sqrt[3]{108} = -2\sqrt[3]{2^2 \cdot 3^3} = -2 \cdot 3 \cdot \sqrt[3]{4} = -6\sqrt[3]{4}. 2. Combine like terms Combine -2\sqrt[3]{4} and -6\sqrt[3]{4} to get (-2 - 6)\sqrt[3]{4} = -8\sqrt[3]{4}.

Explanation

1. Simplify each cube root<br /> $-\sqrt[3]{32} = -\sqrt[3]{2^5} = -2^{5/3} = -2 \cdot 2^{2/3} = -2\sqrt[3]{4}$.<br /> $-2\sqrt[3]{108} = -2\sqrt[3]{2^2 \cdot 3^3} = -2 \cdot 3 \cdot \sqrt[3]{4} = -6\sqrt[3]{4}$.<br /><br />2. Combine like terms<br /> Combine $-2\sqrt[3]{4}$ and $-6\sqrt[3]{4}$ to get $(-2 - 6)\sqrt[3]{4} = -8\sqrt[3]{4}$.
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