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Factorize the following expression; 2x2 + x - 15

Mathematics
WAEC 1989
Factorize the following expression; 2x2 + x - 15
  • A. (2x+5)(x-3)
  • B. (2x-5)(x+3)
  • C. (2x-5)(x-3)
  • D. (2x-3)(x+5)
  • E. (2x+5)(x+3)
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Correct Answer: Option B
Explanation
2x 2 + x - 15; 2x 2 + 6x - 5x - 15

(2x 2 + 6x) - ( 5x + 15)

2x(x + 3) - 5(x + 3)

(2x - 5)(x + 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
Join your school's WhatsApp group
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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