Mathematics
Senior High
Resolved
数Iの分母の有理化の問題です。
答えが2枚目の写真なんですけど、答えが合いませんどこが違うのか教えてもらえませんか?💦
3-2+7
3 + 2 +7
(3-17-12
(3+17+2)13ワ-区)
9+67+7-6区-2+2
9+67-7-2
18+67-62-2
14+617
7
21 3
787+42-87-1412
917イ21-34-72
28
3-2+7
312+7
一+37
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感謝です✨