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题型:填空题 题类:常考题 难易度:困难
(1)(﹣ab2c4)3
(2)(x2y﹣xy2﹣y3)(﹣4xy2)
a2+2a+1={#blank#}2{#/blank#};
y2﹣5y﹣24={#blank#}3{#/blank#};
9﹣x2={#blank#}4{#/blank#}.
(a+b)6=a6+6a5b+{#blank#}1{#/blank#} +20a3b3+15a2b4+ {#blank#}2{#/blank#}+b6
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