填上适当的不等号. ①4x2+1 0 ②-x2 0 ③2x2+2y+1 x2+2y ④a2 0 查看更多

 

题目列表(包括答案和解析)

填上适当的不等号.

①4x2+1__________0                                       ②-x2__________0

③2x2+2y+1__________x2+2y                            a2__________0

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填上适当的不等号.

①4x2+1__________0                      ②-x2__________0

③2x2+2y+1__________x2+2y                a2__________0

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