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sesenic [268]
3 years ago
13

What is the following sum? 3b^2(^3 √54a) + 3(^3 √2ab^6)

Mathematics
2 answers:
sveticcg [70]3 years ago
8 0

Answer:

12b^2\sqrt[3]{2a}

Step-by-step explanation:

Our original expression is

3b^2(\sqrt[3]{54a})+3(\sqrt[3]{2ab^6})

We will first expand the terms under the cubed roots:

3b^2(\sqrt[3]{3*3*3*2*a})+3(\sqrt[3]{2a*b*b*b*b*b*b})

Since we have cubed roots, we are looking for groups of 3 factors.  In the first term, we have three 3's; this means we can bring a 3 out.  In the second term, we have six b's; this means we can bring out 2 b's:

3b^2(3\sqrt[3]{2a})+3(b^2\sqrt[3]{2a})\\\\=9b^2\sqrt[3]{2a}+3b^2\sqrt[3]{2a}

Lastly, combine like terms:

12b^2\sqrt[3]{2a}

Ksenya-84 [330]3 years ago
6 0

Answer

12b^{2} \sqrt[3]{2a}

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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