Algebramedium · Past Paper
Which value of x makes x^2 - 1 / (x-1) undefined?
A1
B-1
C0
DNone
✓ Correct Answer: A — 1
A rational expression is undefined when the denominator is zero. x - 1 = 0 when x = 1.
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✓ Correct Answer: A — 1
A rational expression is undefined when the denominator is zero. x - 1 = 0 when x = 1.
Share this question