Mathematics
Senior High
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高1 サクシード数1 因数分解
なぜ二段目の式から三段目（最後）の式になるのか分かりません。教えて頂きたいです。
(6) 4a2-(a+b)²=(2a)² - (a+b)²
={2a+(a+b)}{2a-(a+b))
=(3a+b)(a - b)
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![383 (1)(3]の漸近線を教えてください。
(1)では
なぜ-1-0が-∞になるのでしょうか - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1804253/thumb_l_webp_D6BF39AA-F312-4187-B4B3-7B9C5CE325B0.webp?Expires=1779003984&Signature=hMVe8xv9CHhPd33o9zyt1JhMkW~R04VOERnl3-5~A0iL1Lu4dKQfehFhvTnETDqvziJy5t97riwrZ62FC2iPYN1b7z4uWVR2DsKWNAjkYXHKIkWDci0DHa4s36t1PU0rsYb8jQRWgKIMEAjijmA7abBUHrldf8H-fWOz3gY-wlbeItvPngf9cEMbnUSi0unzrJl7I3kHsLjYtOEIX3SBMxcPGNzfiphBdOiVqTqUSenJvUECzpeawnHq0hJLatjxIKoqU12-zYwz5QcBvplQw2lj4LWKz9co7tUGkBrh7qhwTPWAqmzvy6Pf5vNeBzDXXI-wnRCwKqMe8yeD474IOA__&Key-Pair-Id=K2W722D70GJS8W&Expires=1779003984&Signature=A7PuHJQhDT2LLxUo4nL7FA7Uw1dSDrCqXvzUSrc8oNnxH-3suqgnDiV9926hQcMSCm1VFbZ~Y9W08llns-PMKsqGgrt77LN29P7fsTvyclTlG5X75AizNfa6Ve73IcweMh6LdyAcT~2IyYmKbMzOKt5BM9YAc6Ai1cjpUPEvzejz1GOvx~t13cSt12RxzApUdHhg79KQNOkxlxM21KmxMlk3e4Q5gRqckEr-vEopg0Ppyhr1nKAvl-y9ud82nopyQEfEvNPdtMknX2k8IznHHy5Vq5qROMpWu~zpTmXT3Co3KPvZy2~NHcmzhTVPcIe6bgplInf9cQFpIPnWtPMumg__&Key-Pair-Id=K2W722D70GJS8W)
![383 (1)(3]の漸近線を教えてください。
(1)では
なぜ-1-0が-∞になるのでしょうか - 2](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1804254/thumb_l_webp_6205CA1D-2D7F-4F50-B305-CE13AD405574.webp?Expires=1779003984&Signature=ZI0oxSys6~AZHTDa-7tSQKkxNqBlCaAcyrVYPvFmKDSO4PUBpI63ySsPZpcHwWgBxRjIHrl3rwTnlNC6HgbtQzQPPL~euagEqSLGeXJW7mOH4Zghc7MZaGFeqDrxX5T~QbyJtUVEjOsXhqukd71MQZarUZ1XcUj8Mhc8x0fD-vwK7txJkXM7XNuECIInzxVubfGW1vVK206FBATzjpQhU6MkUOBoRBRfTJhgjn~nvAuaqwX-ihhoeVadRD9s0gYLchiBa6nfDqPurz6gxKKwcl7m-KsCNfLrRTM-8TEg81OnedDAib-aDmg1PNRwjGRYKHnOZIUnq~nT6Qr1U3CaEg__&Key-Pair-Id=K2W722D70GJS8W&Expires=1779003984&Signature=cIbhRvZbsDc5nsQ60bCip6qcFhX0GdEZVhRh2SzPDTyBciujDXByAOpwt~xeO45y8XYshZ6W~tkFDselEIKZTKHg0scbeOBuaYzS2PCGk7nZBZa6BihLAbOT-RHKe99UPyajVzluk4SHDKMVQSfrN4BELnriIamPxJDBAS6OZ1xAl~1rPQBApKjIzqV9LoMO6kCiaD2BgmtcL2cYY12jEIfC59Aw3lIhkMd-LuNjIYws0H265X9D8pXQNbDhcEgUqCi-7EiXt4MbvjAf146Mo3P1iVu7eG8HnwBovljhDHqbn3bQEv8w0ZMIhsSkL~tecj9xPFEKVIRU6XNOW8A2Ug__&Key-Pair-Id=K2W722D70GJS8W)
![383 (1)(3]の漸近線を教えてください。
(1)では
なぜ-1-0が-∞になるのでしょうか - 3](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1804255/thumb_l_webp_F8AA55C4-A908-43F7-82CE-172C19ACF60D.webp?Expires=1779003984&Signature=g7ladaeEBDOxxzQIz6Ppu18xrSWXV95Gm9rVbcyv5XmutBO-oY-Eunk~fx8v6TohWMYG-Q2EyROGAQ9IeZdO9OHoWVfZDzHCrmuPvhS5xUNWSJZCDzukTeWShJB8iE71LoDyOw6gWBKb6s~bPT7jN1~XmuzKY6osplkKSEPf7I1qEGoXRg0o140uvxfjxO0daWR8IlRv16vK-P2x1mE5cNzenDKSE8VRuIDIBjGjPjJXGFfQ3IHcZZH1-tsGRP9h3zskq8W7orkBusKbzNdX8MV9ZGH3~7-xJia-ZxUR2QT-EI-dt2jIzd4bT2Fm4UfJZCrw9I1tHBNxEDYbUJMhSQ__&Key-Pair-Id=K2W722D70GJS8W&Expires=1779003984&Signature=lf7ogTYsVKDzSsm41QfLRJvWxjw~T6OWnOjTYFtPUPwhpftRz5M7z2AJVxbvOh9wsJYHz-tCkf0jWe0wctsRs6wvNphySxXus2ecQVnZBqitxvxHLuKJ~aX2rbZzCUnjTDMemD05YiXUywUscdE0PxCHRFunSeGrzrr3PThKn6GDlgQlv9GS-txiPQpoZsqK9f3Y1g65DGHVKN6HoZ4O27107Kv03TNGcfufkdCN~eGrU5fv9lATJK-PCdFhuPBugZpyae5SpFAmR6VXOseylox-AspeiDEeRFqXwhIHGhYNrq4nGYuClbRwS9O3E9kXuFnlElp0hLBfePAogXFGQQ__&Key-Pair-Id=K2W722D70GJS8W)
なるほど！ありがとうございます！