分析:根據(jù)同底數(shù)冪的乘法,積的乘方的性質(zhì),同底數(shù)冪的除法,單項式的乘法法則,積的乘方的性質(zhì),完全平方公式計算.
解答:解:(1)102×107,
=102+7,
=109;
(2)(2b2)3,
=8b2×3,
=8b6;
(3)y3n+1÷yn-1,
=y3n+1-n+1,
=y2n+2;
(4)3x3•(-2x2y)=-6x3+2y;
(5)(a-b)2•(b-a)3,
=(b-a)2+3,
=(b-a)5;
(6)0.1252004×(-8)2005,
=0.1252004×(-8)2004×(-8),
=[0.125×(-8)]2004×(-8),
=-8;
(7)(2a+1)2=4a2+4a+1.
點評:本題考查了冪的運算法則和完全平方公式,熟練掌握運算法則和性質(zhì)是解題的關(guān)鍵.