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[Problem Solving]
试题详情
题目：
What is the value of p3 + 2p?
(1) p2 − 5p + 4 = 0.
(2) The value of p2 + 1p is –2.
(1) p2 − 5p + 4 = 0.
(2) The value of p2 + 1p is –2.
选项:
A、A. if statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient;
B、B. if statement (2) ALONE is sufficient to answer the question but statement (1) alone is not sufficient;
C、C. if the two statements TAKEN TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient;
D、D. if EACH statement ALONE is sufficient to answer the question;
E、E. if the two statements TAKEN TOGETHER are still NOT sufficient to answer the question.
答案:
B
提问：
答案是B，我选了E。我认真算了感觉1,2都推不出来。1是p有两个值，不行。2是怎样用p^2+1=-2来推出P^3+2P？ 谢谢，可能卡住了
解答：
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提问：
答案是B，我选了E。我认真算了感觉1,2都推不出来。1是p有两个值，不行。2是怎样用p^2+1=-2来推出P^3+2P？ 谢谢，可能卡住了
解答：
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阅读846
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