问题 填空题 若3x=6,则x=______;若am=3,an=4,则a2m=______;am-n=______. 答案 ∵3x=6,∴x=2;∵am=3,an=4,∴a2m=(am)2=32=9;am-n=am÷an=34.故答案为2,9,34.