JAMB Mathematics 2007 Objective — Question 9

Question 9 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2007 Objective paper, with the correct answer and a full explanation.

Find y, if sqrt(12) - sqrt(147) + y.sqrt(3) = 0.

A. 1
B. 3
C. 5Correct
D. 7

Explanation

sqrt(12)=2sqrt(3), sqrt(147)=7sqrt(3). So 2sqrt(3)-7sqrt(3)+y.sqrt(3)=0, giving sqrt(3)(y-5)=0, so y=5.

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