Post a New Question

Radical expressions

posted by .

What is the process we follow when adding and subtracting radical expressions? Explain the process and demonstrate with an example.

  • Radical expressions -

    I'll give you a list steps to follow:

    1. Determine the lowest common denominator (LCD) for the rational numbers.

    2. Express each rational number as an equivalent rational number with the LCD as the denominator.

    3. Combine the rational numbers by adding/subtracting numerators.

    4. Reduce to lowest terms.

    Example.

    3x/4 + x/5

    The LCD for both fractions is 20. For the first fraction you times both numerator and denominator by 5 to get 15x/20. And for the second fraction, you times x and 5 by 4 to get 4x/20. Then you just add across the numerators. Which gives you 19x/20.

  • Radical expressions -

    ã27 + 6ã3 - 4ã48 = 5ã9*3 + 6ã3 - 4ã16*3
    = 5 ã32*3 + 6ã3 - 4ã42 * 3
    = 5 * 3ã3 + 6ã3 - 4*4ã3
    = 15ã3 + 6ã3 - 16ã3
    = 5ã3 Someone help me understand this process please??

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. AlgebraII

    Why is it important to simplify radical expressions before adding or subtracting?
  2. AlgebraII

    Why is it important to simplify radical expressions before adding or subtracting?
  3. algebra

    Why is it important to simplify radical expressions before adding or subtracting?
  4. Algebra 2/ Radicals

    Why is it important to simplify radical expressions before adding or subtracting?
  5. ALGEBRA

    Why is it important to simplify radical expressions before adding or subtracting?
  6. algebra

    Why is it important to simplify radical expressions before adding or subtracting?
  7. math

    Why is it important to simplify radical expressions before adding or subtracting?
  8. MATH

    What is the index of a radical? When working with radicals, can the radicand be negative when the index is odd?
  9. Radical expressions

    What is the process we follow when multiplying and dividing radical expressions?
  10. Algebra

    What is the process we follow when multiplying and dividing radical expressions?

More Similar Questions

Post a New Question