Rational Expressions Arithmetic
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Questions and Answers

What is the first step in adding rational expressions?

  • Simplify each expression separately
  • Combine the numerators
  • Find a common denominator (correct)
  • Factor the denominators

    • When adding or subtracting rational expressions, what should you do before combining the numerators?

  • Find a common denominator (correct)
  • Factor the denominators
  • Cross-multiply the fractions
  • Simplify the numerators

    • What is an important consideration when subtracting rational expressions?

  • Factor the denominators
  • Always multiply the numerators
  • Find a common denominator (correct)
  • Divide the denominators

    • When adding rational expressions with unlike denominators, what should you find first?

    <p>Find the least common denominator (LCD)</p> Signup and view all the answers

    In the given example, what is the LCD of the fractions 1/(3a) and 1/(4b)?

    <p>12ab</p> Signup and view all the answers

    What is the result of adding (4b)/(12ab) + (3a)/(12ab)?

    <p>(3a + 4b)/(12ab)</p> Signup and view all the answers

    What is an important step when adding rational expressions with unlike denominators?

    <p>Find equivalent expressions with a common denominator</p> Signup and view all the answers

    What should be done if the denominators of rational expressions are relatively prime?

    <p>Find the least common denominator (LCD)</p> Signup and view all the answers

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