Algebraeasy · Past Paper
If x = 2 is a root of x^2 + kx - 6 = 0, find the value of k.
A1
B2
C3
D-1
✓ Correct Answer: A — 1
Substitute x=2: (2)^2 + k(2) - 6 = 0 → 4 + 2k - 6 = 0 → 2k = 2 → k = 1.
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✓ Correct Answer: A — 1
Substitute x=2: (2)^2 + k(2) - 6 = 0 → 4 + 2k - 6 = 0 → 2k = 2 → k = 1.
Share this question