题目内容
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P=$$x^{30}-x^{31}$$
Quantity A
The value of P when x is $$\frac{1}{2}$$
Quantity B
The value fo P when x is $$-\frac{1}{2}$$
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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.
B显示答案