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The factors of 6x - 5 - x2 are

Mathematics
JAMB 1982

The factors of 6x - 5 - x2 are

  • A. -(x + 3)(x + 2)
  • B. (x + 5)(x + 1)
  • C. (x - 5)(1 - x)
  • D. (x + 1)(x + 5)
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Correct Answer: Option C
Explanation

6x - 5 - x2 = (-1)(-x2 - 5 + 6x)

= x2 - 6x + 5

= (x - 5)(x - 1)

-(x - 1) = 1 - x

= (x - 5)(1 - x)

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