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國中數學+詳細算式過程
Oct 17th 2013, 11:48

※要有詳細算式！

|a|=|b|，且a＜b,則a-b=a×2，為什麼？

|a|=6，|b|=2，且a＜0，b＞0，則a-b=？

(-11)×(-12)×13×(-14)×(-15)×16×(-17)×(-18)×19×...×(-32)=負數，為什麼？

以下午三點為準，早上10記作-10，同一天下午五點可記作___？

"口"為運算符號
a口b=a-|b-a|×a

4口(1口2)=？

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