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Simplify: \(\frac{2x^2 - 5x - 12}{4x^2 - 9}\)

Mathematics
WAEC 2008

Simplify: \(\frac{2x^2 - 5x - 12}{4x^2 - 9}\)
  • A. \(\frac{x + 4}{2x + 3}\)
  • B. \(\frac{x + 4}{2x - 3}\)
  • C. \(\frac{x - 4}{2x + 3}\)
  • D. \(\frac{x - 4}{2x - 3}\)
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Correct Answer: Option D
Explanation
\(\frac{2x^2 - 5x - 12}{4x^2 - 9}\) = \(\frac{3x^2 - 8x + 3x - 12}{(2x)^2 - 3^2}\)

= \(\frac{32(x - 4) + 3(x - 4)}{(2x - 3)(2x + 3)} - \frac{(x - 4) + (2x + 3)}{(2x - 3) (2x + 3)}\)

= \(\frac{x - 4}{2x - 3}\)

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Join your school's WhatsApp group
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Join your school's WhatsApp group
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789