Mathematics
Senior High
３～４行目辺りの－が入ってくる所がよく分かりません！
上@?エのァー②+7y+6)
呈ま(3キター(2y+3(y+2)
ーゆ+2))(z二(2ヶ+3))
ーッー2)(*十2y十3).
V -G+2 っ ーー2
本人213 っ の+6
ニー(2y"+7y(
=ニー(2②ッ+8)⑬
2
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