2/1的2004次方*[乘]-2的2005次方-(-99)=?
问题描述:
2/1的2004次方*[乘]-2的2005次方-(-99)=?
(50/1-1)(49/1-1)(48/1-1)````````(4/1-1)(3/1-1)(2/1-1)=?
答
2/1的2004次方*[乘]-2的2005次方-(-99)
=(1/2×(-2))的2004次方×(-2)+99
=1×(-2)+99
=97;
(50/1-1)(49/1-1)(48/1-1)````````(4/1-1)(3/1-1)(2/1-1)
=(-49/50)×(-48/49)×(-47/48)×...×(-2/3)×(-1/2)
=-1/50;
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