作业帮(2/3)^2008x1.5^2007x(-1)^2009(注:^是乘方,2/3是二分之三）
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(2/3)^2008x1.5^2007x(-1)^2009(注:^是乘方,2/3是二分之三）
(2/3)^2008x1.5^2007x(-1)^2009(注:^是乘方,2/3是二分之三）
(2/3)^2008x1.5^2007x(-1)^2009(注:^是乘方,2/3是二分之三）
(2/3)^2008x1.5^2007x(-1)^2009=(2/3)^2008 x (3/2)^2007 x (-1)
= -(2/3)^2008 x (2/3)^(-2007)
=-2/3
(2/3)^2008x1.5^2007x(-1)^2009
=[(2/3)^2007 x2/3]x (3/2)^2007 x (-1)
= [(2/3)^2007x (3/2)^2007]x2/3 x (-1)
=[(2/3x3/2)^2007]x2/3 x (-1)
=1x2/3 x (-1)
=-2/3
哈罗 这个简单 ~
(2/3)^2008x1.5^2007x(-1)^2009
=[(2/3)^2007 x2/3]x (3/2)^2007 x (-1)
= [(2/3)^2007x (3/2)^2007]x2/3 x (-1)
=[(2/3x3/2)^2007]x2/3 x (-1)
=1x2/3 x (-1)
=-2/3