(1)若2x+5y-2=2,求4x•32y的值.(2)已知am=2,an=3,求a2m-3n的值.
题型:解答题难度:一般来源:不详
(1)若2x+5y-2=2,求4x•32y的值. (2)已知am=2,an=3,求a2m-3n的值. |
答案
①∵2x+5y-2=2,即2x+5y=4, ∴4x•32y=22x+5y=16; ②∵am=2,an=3, ∴a2m-3n=(am)2÷(an)3=4÷27=. |
举一反三
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