Algebramedium · Past Paper
If x = 2 is a root of kx^2 + 2x - 3 = 0, find k.
A-1/4
B1/4
C4
D-4
✓ Correct Answer: A — -1/4
k(2)^2 + 2(2) - 3 = 0 => 4k + 4 - 3 = 0 => 4k = -1 => k = -1/4.
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