SAT Math Question of the Day

Math Category: Roots Level 2:

Q: √ 18 + √ 2

  1. 3 √ 2
  2. 4 √ 2
  3. 2 √ 3
  4. 2 √ 3 + √ 2
  5. 10 √ 2

UNANSWERED.

The correct answer is B.

A: The answer is 4 √ 2 .

√ 18 = √ (2)(3)(3) = 3 √ 2
Add √ 2 , and you get 4 √ 2 .