计算(a3b-1)2•(a-2b)3= .
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二次函数y=ax
2+bx+c的图象如图所示,且P=|a-b+c|+|2a+b|,Q=|a+b+c|+|2a-b|,
则P、Q的大小关系是( )
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A.P>Q
B.P<Q
C.P=Q
D.无法确定
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A.162π
B.198π
C.118π
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小明根据邻居家的故事写了一首小诗:“儿子学成今日返,老父早早到车站,儿子到后细端详,父子高兴把家还.”如果用y轴表示父亲与儿子行进中离家的距离,用横轴x表示父亲离家的时间,那么下面的图象与上述诗的含义大致吻合的是( )
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D.
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在拼图游戏中,从图1的四张纸片中,任取两张纸片,能拼成“小房子”(如图2)的概率等于( )
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的值为0,则x的值为( )
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D.0
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