Algebraeasy · Past Paper
If one root of x^2 - 4 = 0 is 2, the other root is:
A2
B-2
C0
D4
✓ Correct Answer: B — -2
x^2 = 4 → x = ±2. If one is 2, the other must be -2.
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✓ Correct Answer: B — -2
x^2 = 4 → x = ±2. If one is 2, the other must be -2.
Share this question