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Divide the radical expressions. Assume [tex]$x \ \textgreater \ 0$[/tex].

[tex] \frac{5 \sqrt{x^7}}{\sqrt{x^4}} [/tex]


Sagot :

To divide the given radical expressions [tex]\( \frac{5 \sqrt{x^7}}{\sqrt{x^4}} \)[/tex], let's simplify each part step-by-step:

1. Simplify the Radicals:

- Start with [tex]\( \sqrt{x^7} \)[/tex]. We know that [tex]\( \sqrt{x^7} = (x^7)^{1/2} = x^{7/2} \)[/tex].

- Next, simplify [tex]\( \sqrt{x^4} \)[/tex]. We know that [tex]\( \sqrt{x^4} = (x^4)^{1/2} = x^{4/2} = x^2 \)[/tex].

2. Rewrite the Original Expression:

Using the simplified forms of the radicals, the given expression becomes:
[tex]\[ \frac{5 \sqrt{x^7}}{\sqrt{x^4}} = \frac{5 \cdot x^{7/2}}{x^2} \][/tex]

3. Simplify the Fraction:

To divide the exponents, use the property of exponents [tex]\( \frac{a^m}{a^n} = a^{m-n} \)[/tex]:
[tex]\[ \frac{5 \cdot x^{7/2}}{x^2} = 5 \cdot x^{(7/2) - 2} \][/tex]

4. Simplify the Exponents:

Calculate the exponent subtraction:
[tex]\[ 5 \cdot x^{(7/2 - 2)} = 5 \cdot x^{(7/2 - 4/2)} = 5 \cdot x^{3/2} \][/tex]

So, the final simplified expression is:
[tex]\[ \boxed{5 x^{3/2}} \][/tex]