QuestionAugust 26, 2025

Which expression simplifies to 6sqrt [3](5) ? (1 point) 4sqrt [3](40)-2sqrt [3](5) 3sqrt [3](40)+3sqrt [3](5) 2sqrt [3](3)-4sqrt [3](2) -5sqrt [3](40)-sqrt [3](5)

Which expression simplifies to 6sqrt [3](5) ? (1 point) 4sqrt [3](40)-2sqrt [3](5) 3sqrt [3](40)+3sqrt [3](5) 2sqrt [3](3)-4sqrt [3](2) -5sqrt [3](40)-sqrt [3](5)
Which expression simplifies to 6sqrt [3](5) ? (1 point)
4sqrt [3](40)-2sqrt [3](5)
3sqrt [3](40)+3sqrt [3](5)
2sqrt [3](3)-4sqrt [3](2)
-5sqrt [3](40)-sqrt [3](5)

Solution
4.4(211 votes)

Answer

4\sqrt [3]{40}-2\sqrt [3]{5} simplifies to 6\sqrt [3]{5} Explanation 1. Simplify each expression 1. 4\sqrt[3]{40} - 2\sqrt[3]{5}: - \sqrt[3]{40} = \sqrt[3]{8 \times 5} = 2\sqrt[3]{5} - 4(2\sqrt[3]{5}) - 2\sqrt[3]{5} = 8\sqrt[3]{5} - 2\sqrt[3]{5} = 6\sqrt[3]{5} 2. 3\sqrt[3]{40} + 3\sqrt[3]{5}: - \sqrt[3]{40} = 2\sqrt[3]{5} - 3(2\sqrt[3]{5}) + 3\sqrt[3]{5} = 6\sqrt[3]{5} + 3\sqrt[3]{5} = 9\sqrt[3]{5} 3. 2\sqrt[3]{3} - 4\sqrt[3]{2}: - No simplification leads to 6\sqrt[3]{5}. 4. -5\sqrt[3]{40} - \sqrt[3]{5}: - \sqrt[3]{40} = 2\sqrt[3]{5} - -5(2\sqrt[3]{5}) - \sqrt[3]{5} = -10\sqrt[3]{5} - \sqrt[3]{5} = -11\sqrt[3]{5}

Explanation

1. Simplify each expression<br /> <br />1. $4\sqrt[3]{40} - 2\sqrt[3]{5}$: <br /> - $\sqrt[3]{40} = \sqrt[3]{8 \times 5} = 2\sqrt[3]{5}$<br /> - $4(2\sqrt[3]{5}) - 2\sqrt[3]{5} = 8\sqrt[3]{5} - 2\sqrt[3]{5} = 6\sqrt[3]{5}$<br /><br />2. $3\sqrt[3]{40} + 3\sqrt[3]{5}$:<br /> - $\sqrt[3]{40} = 2\sqrt[3]{5}$<br /> - $3(2\sqrt[3]{5}) + 3\sqrt[3]{5} = 6\sqrt[3]{5} + 3\sqrt[3]{5} = 9\sqrt[3]{5}$<br /><br />3. $2\sqrt[3]{3} - 4\sqrt[3]{2}$:<br /> - No simplification leads to $6\sqrt[3]{5}$.<br /><br />4. $-5\sqrt[3]{40} - \sqrt[3]{5}$:<br /> - $\sqrt[3]{40} = 2\sqrt[3]{5}$<br /> - $-5(2\sqrt[3]{5}) - \sqrt[3]{5} = -10\sqrt[3]{5} - \sqrt[3]{5} = -11\sqrt[3]{5}$
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