计算的结果是                                                                          

计算的结果是                                                                          

题型:单选题难度:一般来源:吉林省同步题
计算的结果是                                                                                                                                                        [     ]A.
B.﹣4
C.
D.
答案
D
举一反三
已知(a﹣2)2+|b+3|=0,则P(﹣a,﹣b)关于x轴对称点的坐标为[     ]
A.(2,3)
B.(2,﹣3)
C.(﹣2,3)
D.(﹣2,﹣3)
题型:单选题难度:一般| 查看答案
-(-3)2值是[     ]
A.9
B.-9
C.6
D.-6
题型:单选题难度:简单| 查看答案
计算106×(1023÷104之值为何 A.108
B.109
C.1010
D.1012
题型:单选题难度:简单| 查看答案
下列计算正确的是[      ]
A.(xy23=xy6
B.(﹣3x)2=9x2
C.9x﹒3y=27x+y
D.(﹣xy32=﹣x2y6
题型:单选题难度:简单| 查看答案
若3n=2,3m=5,则32m+n﹣1= _________
题型:填空题难度:一般| 查看答案
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