来自陈一明的问题
已知am=3,an=9,则am+n=___,a3m-2n=___.
已知am=3,an=9,则am+n=___,a3m-2n=___.
1回答
2020-09-07 21:58
已知am=3,an=9,则am+n=___,a3m-2n=___.
已知am=3,an=9,则am+n=___,a3m-2n=___.
am+n=am×an=27,
a3m-2n=(am)3÷(an)2=27÷81=13