问题
填空题
已知am=2,an=3,则a2m-3n=______.
答案
∵am=2,an=3,
∴a2m-3n=a2m÷a3n,
=(am)2÷(an)3,
=22÷33,
=
.4 27
故填
.4 27
已知am=2,an=3,则a2m-3n=______.
∵am=2,an=3,
∴a2m-3n=a2m÷a3n,
=(am)2÷(an)3,
=22÷33,
=
.4 27
故填
.4 27