题目内容
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Quantity A
The number of real roots of $$2x- \frac{4}{7}$$=0
Quantity B
The number of real roots of $$2x^2 + \frac{4}{7}$$=0
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AQuantity A is greater.
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BQuantity B is greater.
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CThe two quantities are equal.
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DThe relationship cannot be determined from the information given.
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