Mathematics
Senior High
（2）、（4）教えてください！！
ーー
*(2) を2十5zy十6y2ー2ァ7yー3
(4) 3?一14ァy十15y2?十13ァー23y十4
MIみみ pm 。 | nm やや: 和光\ . 詳 更衣
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