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Given 
x > 0, the expression 
root(8)(x^(49)) is equivalent to

x^(6)root(8)(x)

x^(5)root(8)(x^(2))

x^(5)root(8)(x)

x^(6)root(8)(x^(2))

Given x>0 , the expression x498 \sqrt[8]{x^{49}} is equivalent to\newlinex6x8 x^{6} \sqrt[8]{x} \newlinex5x28 x^{5} \sqrt[8]{x^{2}} \newlinex5x8 x^{5} \sqrt[8]{x} \newlinex6x28 x^{6} \sqrt[8]{x^{2}}

Full solution

Q. Given x>0 x>0 , the expression x498 \sqrt[8]{x^{49}} is equivalent to\newlinex6x8 x^{6} \sqrt[8]{x} \newlinex5x28 x^{5} \sqrt[8]{x^{2}} \newlinex5x8 x^{5} \sqrt[8]{x} \newlinex6x28 x^{6} \sqrt[8]{x^{2}}
  1. Understand Expression and Properties: Understand the given expression and the properties of exponents and roots.\newlineThe given expression is x498\sqrt[8]{x^{49}}, which means we are looking for the 88th root of xx raised to the 4949th power. We can use the property of exponents that states amn=amn\sqrt[n]{a^m} = a^{\frac{m}{n}} to simplify the expression.
  2. Apply Exponent Property: Apply the exponent property to the given expression.\newlineUsing the property from Step 11, we can rewrite x498\sqrt[8]{x^{49}} as x498x^{\frac{49}{8}}.
  3. Simplify Exponent Division: Simplify the exponent by dividing 4949 by 88. When we divide 4949 by 88, we get 66 with a remainder of 11. This means that x(49/8)x^{(49/8)} can be written as x(6+1/8)x^{(6 + 1/8)}.
  4. Separate Exponents: Separate the whole number exponent from the fractional exponent.\newlineWe can rewrite x6+18x^{6 + \frac{1}{8}} as x6x18x^6 \cdot x^{\frac{1}{8}} by using the property of exponents that states am+n=amana^{m + n} = a^m \cdot a^n.
  5. Recognize 88th Root: Recognize that x18x^{\frac{1}{8}} is the 88th root of xx. We can now see that x18x^{\frac{1}{8}} is the same as x8\sqrt[8]{x}, so the expression becomes x6x8x^6 \cdot \sqrt[8]{x}.
  6. Check Answer Choices: Check the answer choices to see which one matches our simplified expression.\newlineThe correct answer choice that matches x6x8x^6 \cdot \sqrt[8]{x} is the last one: x6x28x^{6}\sqrt[8]{x^{2}}. However, we need to verify that this is indeed equivalent to our simplified expression.
  7. Verify Equivalence: Verify the equivalence of x6x28x^{6}\sqrt[8]{x^{2}} and x6x8x^6 \cdot \sqrt[8]{x}. We can see that x6x28x^{6}\sqrt[8]{x^{2}} implies an additional factor of x28x^{\frac{2}{8}} or x14x^{\frac{1}{4}}, which is not present in our simplified expression. Therefore, this answer choice is incorrect, and we have made a mistake in matching the answer choices.

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