What is the value of$$x^2+$$$${1}\over{x^2}$$ ?
(1) $$x+{{1}\over{x}}= 2$$
(2) $$x^2-1=0$$
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AStatement 1 ALONE is sufficient to answer the question, but statement 2 alone is NOT sufficient.
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BStatement 2 ALONE is sufficient to answer the question, but statement 1 alone is NOT sufficient.
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CBOTH statements 1 and 2 TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient.
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DEach statement ALONE is sufficient to answer the question.
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EStatement 1 and 2 TOGETHER are NOT sufficient to answer the question.
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正确答案: D