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Post-UTME Mathematics 2019 Objective — Question 20

Question 20 of 50 from the Post-UTME Screening (Post-UTME) Mathematics 2019 Objective paper, with the correct answer and a full explanation.

Simplify 1/(1+√5) - 1/(1-√5)

A. -1/2√5Correct
B. 1/2√5
C. 1/4√5
D. √5

Explanation

Rationalizing both fractions and combining gives -1/2√5 (equivalently -√5/2).

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