Math Problem Statement

Express 2x^2 / sqrt(3x^7) in simplest radical form with a rational denominator (assume x > 0).

Solution

The question asks to express 2x23x7\frac{2x^2}{\sqrt{3x^7}} in its simplest radical form with a rational denominator.

Let's break it down step by step:

Step 1: Simplify the denominator

The denominator is 3x7\sqrt{3x^7}. We can rewrite it as: 3x7=3x7=3x7/2\sqrt{3x^7} = \sqrt{3} \cdot \sqrt{x^7} = \sqrt{3} \cdot x^{7/2}

Step 2: Simplify the entire expression

Now, the expression becomes: 2x23x7/2\frac{2x^2}{\sqrt{3} \cdot x^{7/2}} We can simplify the powers of xx: x2x7/2=x27/2=x3/2\frac{x^2}{x^{7/2}} = x^{2 - 7/2} = x^{-3/2} So the expression becomes: 2x3/23=23x3/2\frac{2x^{-3/2}}{\sqrt{3}} = \frac{2}{\sqrt{3}} \cdot x^{-3/2}

Step 3: Rationalize the denominator

To rationalize the denominator, multiply the numerator and denominator by 3\sqrt{3}: 2333=233\frac{2}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}} = \frac{2\sqrt{3}}{3} Thus, the simplified form is: 233x3/2\frac{2\sqrt{3}}{3} \cdot x^{-3/2}

This is the simplest radical form.

Final Answer:

233x3/2\frac{2\sqrt{3}}{3}x^{-3/2}

Would you like further details on any step or have any additional questions? Here are some related questions to explore:

  1. How do you simplify radical expressions with variables?
  2. What are the steps to rationalize a denominator?
  3. How do you handle fractional exponents during simplification?
  4. Can this process be applied to more complex radicals?
  5. How does rationalizing a denominator affect the value of the expression?

Tip: Always check for opportunities to combine like terms when simplifying expressions with exponents!

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Math Problem Analysis

Mathematical Concepts

Simplifying Radical Expressions
Exponents
Rationalizing the Denominator

Formulas

sqrt(a*b) = sqrt(a) * sqrt(b)
x^m / x^n = x^(m-n)
Rationalizing: multiply numerator and denominator by sqrt(denominator)

Theorems

Exponent Rules
Simplifying Radicals
Rationalization of Denominator

Suitable Grade Level

Grades 9-12