Mathematics
Senior High
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解説を見てもよく分からなかったので教えてください🙇♀️
2枚目が答えです
(3) (x+3)3-4x-12
=(x+1)(x+3)(x+5)
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![基本例題の[2]についてです。ここの条件ですが、
a/3<=1<=4a/3とありますが4a... - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1810404/thumb_l_webp_70236300-B387-4A8D-A246-76C58E626EEE.webp?Expires=1787704406&Signature=btJCXcdFn25gyap5TVvnahoLLLYRH2bY3qrIGv0LaN8WuE0yEN~IvrgmYP93i9tXD6~rnZyKFTQFXDxi~xCfSpXnyrlYw3Dr3p3Zxs3wkiSJb2mXdRKFBEEXFIy1J2NguKUJd~4yyJTa93wlZnpNkd5rQ9c0EsvQqfZKG0lS8~kGE3e08pt69hwdYNE3q2pBvhATBA1Ct0PYPriyM16~Ps3-P0K7~b0gT4zigUFiGs7cJ5YlY1vrfTABkPq8Ra4QIJ7O0U32WXt6Q78VbiBJvMFQhr1muEDYj0O5gMVevQ1tjTuo2yxEZ9BwQPKgquJpPxJKSf16cTcQeDV3Hv7hWQ__&Key-Pair-Id=K2W722D70GJS8W&Expires=1787704406&Signature=GES0wlp0YRQ3QG-5GX30~zgsWDpdYFjGtqZr9Zo1-H7kniU59OPX9JzoXRKpl73z5B3eFJzDdwo1K5CPYpkAkGPQnBjERV0YxrKCO6ddqi-nRNJJ8xjGC9HZNg9wWHt7S6BMLZ26ZDgmGgs~aEujBioPx7XihZ80rLDNUcdQhaozuLbL0OmZn3vg2ogw~TG6--sd66p22G2jZG5OTR4Pu6ldDDm3SMI6MrDhnJhMqzz2105Q1f7f8hJfStte8DjGtyamG8UK3sGdDn4jSRiG2H~wN7wlTYPVtCVny7xRVYTZcHCNUGqP5WjSFCd8kRy7Pz52JRDnZRR0MLR1c0CspA__&Key-Pair-Id=K2W722D70GJS8W)
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納得しました！ありがとうございます🙇♀️