Find the coefficient of m in the expression of (\(\frac{m}{2} - 1 \frac{1}{2}\)) (m +
MATHEMATICS
WAEC 2012
Find the coefficient of m in the expression of (\(\frac{m}{2} - 1 \frac{1}{2}\)) (m + \(\frac{2}{3}\))
- A. -\(\frac{1}{6}\)
- B. - \(\frac{1}{2}\)
- C. -1
- D. -1\(\frac{1}{6}\)
Correct Answer: D. -1\(\frac{1}{6}\)
Explanation
(\(\frac{m}{2} - 1\frac{1}{4}\))(m + \(\frac{2}{3}\))
(\(\frac{m}{2} - \frac{3}{2}\))(\(\frac{m}{1} + \frac{2}{3}\))
= \(\frac{m^2}{3} + \frac{3m}{6} - \frac{6}{6}\)
= \(\frac{2m - 9m}{6}\)
= \(\frac{-7m}{6}\)
= -1\(\frac{1}{6}\)
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *