SAT Math Question of the Day

Math Category: Roots Level 2:

Q: 1 / √ 3

  1. 1/3
  2. √ 3
  3. √ 3  / 3
  4. 3
  5. 4/3

UNANSWERED.

The correct answer is C.

A: The answer is √ 3  / 3.

If you have a root in the bottom half of the fraction (the denominator) you have to multiply the top and bottom parts of the fraction by the root.

1   =   1 × √ 3   =   √ 3
√ 3 √ 3 × √ 3 3

The math term for this is to "rationalize the denominator".