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What is the simplified form of [tex]$\sqrt{\frac{63 x^{15}}{7 x}}$[/tex]?

A. [tex]7 x^7 \sqrt{x}[/tex]
B. [tex]3 x^7[/tex]
C. [tex]3 x^7 \sqrt{x}[/tex]
D. [tex]9 x^7[/tex]

Answer :

Sure, let's simplify the expression [tex]\(\sqrt{\frac{63 x^{15}}{7 x}}\)[/tex] step by step.

1. Simplify Inside the Square Root:
- Start by simplifying the fraction inside the square root: [tex]\(\frac{63 x^{15}}{7 x}\)[/tex].

2. Divide the Coefficients:
- Divide the numbers: [tex]\(\frac{63}{7} = 9\)[/tex].

3. Simplify the Variables:
- For the variables, subtract the exponents: [tex]\(x^{15} / x^1 = x^{15-1} = x^{14}\)[/tex].

4. Write the Simplified Expression Inside the Square Root:
- Now the expression inside the square root is: [tex]\(9x^{14}\)[/tex].

5. Simplify the Square Root:
- Break down the square root: [tex]\(\sqrt{9x^{14}} = \sqrt{9} \times \sqrt{x^{14}}\)[/tex].

6. Compute Each Square Root:
- [tex]\(\sqrt{9} = 3\)[/tex].
- [tex]\(\sqrt{x^{14}} = x^{14/2} = x^7\)[/tex] because taking the square root is the same as raising to the power of [tex]\(\frac{1}{2}\)[/tex].

7. Combine the Results:
- Combine these results: [tex]\(3 \times x^7 = 3x^7\)[/tex].

Therefore, the simplified form of [tex]\(\sqrt{\frac{63 x^{15}}{7 x}}\)[/tex] is [tex]\(\boxed{3x^7}\)[/tex].

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