Algebramedium · Past Paper
What is the value of k if x-1 is a factor of x^2 + kx - 5?
A4
B-4
C6
D-6
✓ Correct Answer: A — 4
P(1) = 0 => 1^2 + k(1) - 5 = 0 => 1 + k - 5 = 0 => k = 4.
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✓ Correct Answer: A — 4
P(1) = 0 => 1^2 + k(1) - 5 = 0 => 1 + k - 5 = 0 => k = 4.
Share this question