Mathematics
Senior High
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/の9/ ko うな三角形の面積を求めよ。
) 3上胡0(0. 0), A(4 6), B(83) を頂点とする AOAB
き 《⑳⑰3 直線 3ヶー2y十4三0, *十4yッ十6三0, 2xキッー2王0 で囲まれた三角形
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![(2)[1]の式はなぜこうなるのでしょうか？
解説お願いします🙏🏻 - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1810073/thumb_l_webp_1717B3E3-8A84-49A5-82D1-466207496D96.webp?Expires=1787303151&Signature=goLMBLMVb8U0yvvxTrxhDSLl1-cHaAI22LfyiW7EEeF3y2Ujw4PNc5dl~WfAy381X9T6epsXMTgol5CnUkfgciZ~HZsFQp6OxeGCJplkg-BSMjDoEjlUQ2uJ0l3RETeGaTRp5va5l91dCy5NOsTotQw-W5RiW5j5uIq-RJ~lXtCGT5sb73-QImWyEMGjQtTTyjPFrow~j~HsvzLm8nATSHp34u9wUvMOowgyLo4yEDWlAQrm4g-k9XG6EViHe4OCNsemyWrN~ey64WaxY24scitZNR~jJKJ4zHMeZmofMneXUkedqFyrTLmlsBItaJXde9cMNERgSmxWyOc1R921sA__&Key-Pair-Id=K2W722D70GJS8W&Expires=1787303151&Signature=Khtxl~MKikGtq5aiOC1-g70s1E9hFDqFgz2~HTnewSFZeTezxxiMgIFKGYOYPO0nXbIgYQkGLDxr2Oh0RLJ-Q5xCR4XiR9gZPaWFQI2gqe1-JitPjawz0OIG0YwIe~EqNbMXROOEOQ9iIDOCqUC~e4wtIJGVu-qx~xp-5at7ypBv2TKdtyxDCULVOBi6pGRYbn-d2VsXB1KEffaHxfslfYedVgF18~NRv9I84R~tv3-fsa-lrUn6RZ-z7Zxo~wjkJ1MTG7IfRbieWOT5pmsx2vJKX2eXvuh9~pu4hVM6LEJ1HWBNYF~d1fZWwcNn4KIP-GP6~4vBo-W4ZOuJMerkCw__&Key-Pair-Id=K2W722D70GJS8W)
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