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If the sum of the roots of 2x\(^2\) + 5mx + n = 0 is...

Further Mathematics
WAEC 2020

If the sum of the roots of 2x\(^2\) + 5mx + n = 0 is 5, find the value of m.

  • A. - 2.5
  • B. - 2.0
  • C. 2.0
  • D. 2.5
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Correct Answer: Option B
Explanation

Sum of roots = \(\frac{-a}{b}\) 

= \(\frac{-5m}{2}\) = 5

\(\frac{-5m}{m} = \frac{10}{-5}\)

m = -2


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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709