(x+1/x)^4 + 4(x+1/x)^2-14=81+36-14=83
回複:請幫忙,一道數學題
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• 回複:回複:請幫忙,一道數學題 -m6412- ♂ (77 bytes) () 09/08/2010 postreply 12:31:32
• 回複:回複:請幫忙,一道數學題 -m6412- ♂ (77 bytes) () 09/08/2010 postreply 12:31:32
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