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A.
x2 - c2 = 0
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B.
x2 + 2cx = 0
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C.
x2 + 2cx + c2 = 0
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D.
x2 - 2cx + c2 = 0
Correct Answer: Option A
Explanation
Roots; x and -c
sum of roots = c + (-c) = 0
product of roots = c x -c = -c2
Equation; x2 - (sum of roots) x = product of roots = 0
x2 - (0)x + (-c2) = 0
x2 - c2 = 0
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