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Factorize 4x2 - 9y2 + 20x + 25

Mathematics
JAMB 2001
Factorize 4x2 - 9y2 + 20x + 25
  • A. (2x -3y + 5)(2x - 3y - 5)
  • B. (2x - 3y)(2x + 3y)
  • C. (2x - 3y +5)(2x + 3y + 5)
  • D. (2x + 5)(2x - 9y +5)
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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Correct Answer: Option C
Explanation
Given: 4x2 - 9y2 + 20x + 25
Collect like terms: 4x2 + 20x + 25 - 9y2
(2x + 5)(2x + 5) - 9y2
(2x + 5)2 - (3y)2

(2x - 3y +5)(2x + 3y + 5)
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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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
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