计算(2008³-2×2008²-2006)除以(2008³+2008²-2009)的值为
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计算(2008³-2×2008²-2006)除以(2008³+2008²-2009)的值为
计算(2008³-2×2008²-2006)除以(2008³+2008²-2009)的值为
计算(2008³-2×2008²-2006)除以(2008³+2008²-2009)的值为
令a=2008
原式=[a³-2a²-(a-2)]/[a³+a²-(a+1)]
=[a²(a-2)-(a-2)]/[a²(a+1)-(a+1)]
=(a-2)(a²-1)/(a+1)/(a²-1)
=(a-2)/(a+1)
=2006/2009
0
2006/2009
(2008³-2×2008²-2006)/(2008³+2008²-2009)
=[2008²(2008-2)-2006]/[2008²(2008+1)-2009]
=[2008²×2006-2006]/[2008²×2009-2009]
=[(2008²-1)×2006]/[(2008²-1)×2009]
=2006/2009
2008³-2×2008²-2006
=2008²(2008-2)-2006
=2008²×2006-2006
=2006(2008²-1)
=2006×2007×2009
2008³+2008²-2009
=2008²(2008+1)-2009
=2008...
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2008³-2×2008²-2006
=2008²(2008-2)-2006
=2008²×2006-2006
=2006(2008²-1)
=2006×2007×2009
2008³+2008²-2009
=2008²(2008+1)-2009
=2008²×2009-2009
=2009×(2008²-1)
=2009²×2007
所以原式=
(2006×2007×2009)÷(2009²×2007)
=2006/2009
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