若n为整数,则一定能整除(6n+5)²-9的是A.3 B.6n-1 C.4 D.6
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若n为整数,则一定能整除(6n+5)²-9的是A.3 B.6n-1 C.4 D.6
若n为整数,则一定能整除(6n+5)²-9的是
A.3 B.6n-1 C.4 D.6
若n为整数,则一定能整除(6n+5)²-9的是A.3 B.6n-1 C.4 D.6