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PPSC Past Paper 2026 (PWWD)

PPSC · 2026 · Practice with instant answers and explanations

Practice Mode53 Past Paper MCQs
Question 39 of 53
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Practice Time00:00
Question39
Past PaperPPSC

If x = 7 − 4√3, find the value of x − 1/x.

Correct Answer: Option C — −8√3
Explanation:
The reciprocal is 1/x = 7 + 4√3 because (7 − 4√3)(7 + 4√3) = 1. Therefore x − 1/x = −8√3.
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