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QuizMultiple Choice

Dividing Radicals — Quiz

Question 1 • College Readiness Mathematics

What is the following quotient? the fraction with numerator 3 square root of 8 and denominator 4 square root of 6

Answer
A
the fraction with numerator square root of 3 and denominator 12
B
the fraction with numerator square root of 3 and denominator 2
C
the fraction with numerator 3 square root of 6 minus 4 square root of 3 and denominator 24
D
the fraction with numerator 12 square root of 2 minus 6 square root of 3 and denominator 5

Explanation

Simplify the numerator: 3√8 = 6√2. Then (6√2)/(4√6) = (3/2)√(2/6) = (3/2)√(1/3). Since √(1/3) = 1/√3, this becomes 3/(2√3) = √3/2 after rationalizing the denominator. The quotient is √3/2, choice B.

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