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For what value of x is \(\frac{4 - 2x}{x + 1}\) undefined.

Mathematics
WAEC 2021

For what value of x is \(\frac{4 - 2x}{x + 1}\) undefined.

  • A. 2
  • B. -1
  • C. 1
  • D. -2
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Correct Answer: Option B
Explanation

A rational expression is undefined when the denominator is equal to zero.

when x = -1

The denominator in this equation : x + 1

--> -1 + 1 = 0

This expression is undefined when x = -1

 

 


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