Math Problem Statement
Solution
The problem asks us to rationalize the denominator of the given fraction:
Step-by-Step Solution
Step 1: Multiply numerator and denominator by
To rationalize the denominator, we eliminate the square root from the denominator by multiplying both numerator and denominator by :
This results in:
Step 2: Distribute in the numerator
Now, expand the numerator:
Using the property , simplify each term:
So the numerator becomes:
Step 3: Simplify
Since , substitute this back:
Thus, the numerator becomes:
Step 4: Write the final expression
Now, the fraction is:
Final Answer:
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Here are 5 related questions to explore:
- How do you rationalize a denominator involving sums or differences, such as ?
- Can you explain why multiplying by preserves the value of the fraction?
- What are the general rules for simplifying square roots like ?
- How would you rationalize a denominator with a binomial, such as ?
- How can you verify the final answer is equivalent to the original expression?
Tip: Always simplify square roots as much as possible (e.g., ) before writing your final answer.
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Math Problem Analysis
Mathematical Concepts
Rationalizing denominators
Simplifying square roots
Properties of radicals
Formulas
\(\sqrt{a} \cdot \sqrt{b} = \sqrt{ab}\)
\(\frac{a}{\sqrt{b}} \cdot \frac{\sqrt{b}}{\sqrt{b}} = \frac{a\sqrt{b}}{b}\)
Theorems
Properties of square roots
Simplification of radicals
Suitable Grade Level
Grades 9-11