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M=(a2•a•a5•b•bn)5,则M等于()A.a40b5n+1B.a40b5n+5C.a35b5nD.a35b5n+5

题目详情
M=(a2•a•a5•b•bn5,则M等于(  )

A.a40b5n+1
B.a40b5n+5
C.a35b5n
D.a35b5n+5
▼优质解答
答案和解析
M=(a2•a•a5•b•bn5
=(a2+1+5•b1+n5
=(a8•b1+n5
=a40•b5+5n
故选:B.