Mathematics
Senior High
Resolved
展開したらa²とc²どっかいきまして、-2acが2個も居座っているんです…泣
どーやったら2(a²+b²+c²)になりますかね🙃
AB°+ AC°={(-c-a)°+(0-b)?}
S+(c-a)?+(0-6)}
=2(a°+6?+c?2)
ミのとき」
2
AB4 AC_ -C-a+(0-d33+ {ce-a34(0-ム子)
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ありがとうございます_|\○_