9
QuizMultiple Choice

Dividing Radicals — Quiz

Question 9 • College Readiness Mathematics

What is the following quotient? the fraction with numerator 5 and denominator square root of 11 minus square root of 3

Answer
A
the fraction with numerator 5 square root of 11 minus 5 square root of 3 and denominator 8
B
the fraction with numerator 5 square root of 11 plus 5 square root of 3 and denominator 8
C
5 eighths
D
the fraction with numerator 5 square root of 2 and denominator 4

Explanation

Multiply the numerator and denominator by the conjugate, √11 + √3, to remove the radicals from the denominator. The denominator becomes (√11)² − (√3)² = 11 − 3 = 8, so the quotient is (5√11 + 5√3)/8. This is choice A.

AI-written and checked against the verified answer.

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