Math Problem Statement

(5-2\sqrt(5))/(\sqrt(5))*(\sqrt(5))/(\sqrt(5))

Solution

Let's simplify the expression:

(525)5×55\frac{(5 - 2\sqrt{5})}{\sqrt{5}} \times \frac{\sqrt{5}}{\sqrt{5}}

First, note that multiplying by 55\frac{\sqrt{5}}{\sqrt{5}} is equivalent to multiplying by 1, so it doesn't change the value of the expression. However, this multiplication simplifies the expression by rationalizing the denominator.

We can distribute 55\frac{\sqrt{5}}{\sqrt{5}} over the numerator:

(525)5×55=5525×55×5\frac{(5 - 2\sqrt{5})}{\sqrt{5}} \times \frac{\sqrt{5}}{\sqrt{5}} = \frac{5\sqrt{5} - 2\sqrt{5} \times \sqrt{5}}{\sqrt{5} \times \sqrt{5}}

Simplify each part:

  • 5×5=555 \times \sqrt{5} = 5\sqrt{5}
  • 5×5=5\sqrt{5} \times \sqrt{5} = 5
  • 25×5=2×5=10-2\sqrt{5} \times \sqrt{5} = -2 \times 5 = -10
  • 5×5=5\sqrt{5} \times \sqrt{5} = 5

So the expression simplifies to:

55105\frac{5\sqrt{5} - 10}{5}

We can separate the terms in the numerator:

555105\frac{5\sqrt{5}}{5} - \frac{10}{5}

Simplify each term:

  • 555=5\frac{5\sqrt{5}}{5} = \sqrt{5}
  • 105=2\frac{10}{5} = 2

So, the simplified result is:

52\sqrt{5} - 2

Thus, the final answer is:

52\boxed{\sqrt{5} - 2}

Would you like more details on any step? Here are five related questions to think about:

  1. How would you rationalize the denominator of 17\frac{1}{\sqrt{7}}?
  2. What is the result of 3+22\frac{3 + \sqrt{2}}{\sqrt{2}}?
  3. Can you simplify 1233\frac{\sqrt{12} - \sqrt{3}}{\sqrt{3}}?
  4. How do you simplify 777\frac{7 - \sqrt{7}}{\sqrt{7}}?
  5. What is the process for rationalizing complex denominators like 231\frac{2}{\sqrt{3} - 1}?

Tip: When simplifying expressions with square roots, rationalizing the denominator can make the expression easier to work with.

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Math Problem Analysis

Mathematical Concepts

Algebra
Rational Expressions
Square Roots

Formulas

Simplification of Rational Expressions
Multiplication of Square Roots

Theorems

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Suitable Grade Level

Grades 10-12