Math Problem Statement

Find the LCD of \(\frac{3}{x-2}\) and \(\frac{1}{x+3}\)

Solution

The problem asks to find the Least Common Denominator (LCD) of the fractions 3x2\frac{3}{x-2} and 1x+3\frac{1}{x+3}.

Step-by-Step Solution:

  1. Identify the denominators:

    • The first fraction has the denominator x2x - 2.
    • The second fraction has the denominator x+3x + 3.
  2. Determine the LCD:

    • The LCD is the least common multiple (LCM) of the denominators.
    • Since x2x - 2 and x+3x + 3 are distinct linear factors, the LCD is simply the product of these two factors.

    LCD=(x2)(x+3)\text{LCD} = (x - 2)(x + 3)

So, the LCD of the fractions 3x2\frac{3}{x-2} and 1x+3\frac{1}{x+3} is (x2)(x+3)(x - 2)(x + 3).

Would you like to dive deeper into this topic or have any other questions?

Here are five related questions:

  1. How do you find the LCD of more than two fractions?
  2. What is the importance of finding the LCD in adding fractions?
  3. How can you simplify the expression 1x2+1x+3\frac{1}{x-2} + \frac{1}{x+3} using the LCD?
  4. What happens if one of the denominators is a quadratic expression?
  5. Can the LCD ever be smaller than any of the original denominators?

Tip: When dealing with algebraic fractions, always factor the denominators first to find the LCD efficiently.

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Math Problem Analysis

Mathematical Concepts

Algebra
Least Common Denominator (LCD)
Rational Expressions

Formulas

LCD = (x - 2)(x + 3)

Theorems

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Suitable Grade Level

Grades 8-10