若am=3,an=5,a3m-2n=______.
题型:填空题难度:一般来源:不详
若am=3,an=5,a3m-2n=______. |
答案
∵am=3,an=5, ∴(am)3÷(an)2=27÷25=, ∴a3m-2n=. 故答案为:. |
举一反三
已知am=4,an=3,则a2m+n=______,am-2n=______. |
已知5m=,5n=3,则5m-2n=______,52m+n=______. |
若am=3,an=5,则a2m-n=______. |
已知xa=4,xb=9,则x3a-2b=______. |
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