来自李建欣的问题
若am=2,an=3,则am+n=______,a3m-2n=______.
若am=2,an=3,则am+n=______,a3m-2n=______.
1回答
2020-09-09 19:29
若am=2,an=3,则am+n=______,a3m-2n=______.
若am=2,an=3,则am+n=______,a3m-2n=______.
因为am=2,an=3,
所以am+n=am•an=2×3=6;
a3m-2n=a3m÷a2n=(am)3÷(an)2=23÷32=89