Mathematics
Senior High
Resolved
①(2x³y/3－x²y²/6＋5xy³)÷(－xy/18)
②(2a＋b)(2a－3b)－(a－2b)²
それぞれ解き方が分かりません。
詳しく説明をお願いします🙏
ちなみに、答えは①－12x²＋3xy－10y²
②3a²－7b² です
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なるほど！理解できました！
ご丁寧にありがとうございます！