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For what values of y is the expression \(\frac{6y-1}{y^2 - y-6}\) not defined?

Mathematics
WAEC 2005

For what values of y is the expression \(\frac{6y-1}{y^2 - y-6}\) not defined?

  • A. \(\frac{1}{6}, \frac{1}{4}\)
  • B. 3, -2
  • C. -3, 2
  • D. 0,1
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Correct Answer: Option B
Explanation

The expression is not defines when \(y^2\) - y - 6 = 0
=> \(y^2\) - 3y + 2y - 6 = 0 => (y-3)(y+2) = 0 => y
-3 = 0 or y + 2 = 0 => y = 3 or -2


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