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-2^2004負的2的2004次方選取公因式負數的偶數次方等於相應整數的偶數次方(-2)^2005 + 2^2004 =(-2)*(-2)^2004 + 2^2004 =(-2)*2^2004 + 2^2004=(-2 + 1)*2^2004 = - 2^2004第二個等號的原因如上負數的偶數此…
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