已知:3x+2y=0,求27^x乘9^y的值
问题描述:
已知:3x+2y=0,求27^x乘9^y的值
答
(27^x)×(9^y)
=[(3³)^x][(3²)^y]
=[3^(3x)]×[3^(2y)]
=3^(3x+2y)
=3^0
=1