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Given that x = 2 and y = -\(\frac{1}{4}\), evaluate \(\frac{x^2y - 2xy}{5}\)

Mathematics
WAEC 2008

Given that x = 2 and y = -\(\frac{1}{4}\), evaluate \(\frac{x^2y - 2xy}{5}\)
  • A. zero
  • B. \(\frac{1}{5}\)
  • C. 1
  • D. 2
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Correct Answer: Option A
Explanation
Given; x = 2; y = \(\frac{-1}{4}\)

= \(\frac{x^2y - 2xy}{5}\)

= \(\frac{2^2(\frac{-1}{4}) - 2(2)(\frac{-1}{4})}{5}\)

= \(\frac{4(\frac{-1}{4}) + 4(\frac{-1}{4})}{5}\)

= \(\frac{1 + 1}{5}\)

= \(\frac{0}{5}\)

= 0

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JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
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