Tip
You may be asked to simplify radical expressions, add or subtract radical expressions, or multiply or divide radical expressions.
Sample Problem
Which of the following is equivalent to √(12x2) + √(27x2) for positive values of x?
Answer Options
(A) 15x
(B) 18x
(C) x√39
(D) 5x√3
(E) 6x√3
View Correct Answer
(D) 5x√3
√12x2 = √4 ∙ 3x2 = 2x√3 and √27x2 = √9 ∙ 3x2 = 3x√3 , so 2x√3 + 3x√3 = 5x√3
