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Scrat [10]
3 years ago
13

How to divide and simplify this radical expression

Mathematics
1 answer:
Evgen [1.6K]3 years ago
8 0

Answer:

  \dfrac{2x}{5}\sqrt[3]{50x^2}

Step-by-step explanation:

Since the root indices are the same, the fraction can be combined under one radical. Then you want to do two things:

  • factor out perfect cubes
  • make the denominator a perfect cube (so it can be factored out)

__

  \displaystyle\dfrac{\sqrt[3]{16x^8y^2}}{\sqrt[3]{5x^3y^2}}=\sqrt[3]{\dfrac{16x^8y^2}{5x^3y^2}}=\sqrt[3]{\dfrac{16x^5}{5}}=\sqrt[3]{\dfrac{(2x)^3\cdot2\cdot5^2x^2}{5^3}}\\\\=\boxed{\dfrac{2x}{5}\sqrt[3]{50x^2}}

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