Mathematics
Junior High
Resolved
これはなぜ①②④だけが二次方程式になるのですか？
(4) 次の①~④の方程式のうち、二次方程式であるものをすべ
て選び, 番号で答えなさい。
① x2 = 3 x
③ 9 x = (3x+7)²
② x 2-x-6=0
④ 3x2-14=0
2
(3
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
![[線分AC上にあるときに線分CPの長さが最小となる]ことはわかるんですけど、なぜそのことに... - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1550574/thumb_l_16940868860490.jpg?Expires=1787347314&Signature=dRwOmL6jP4tS649H1xdtd3u9SOVocGR0JrNNK3DnZ31Gmos3HExqzsLOclK9~5qnF7ZFix6o-~rvt1aG05QArbtwWle3f23bGwuvQ3V9pAbHDnJJHbo194lb06SZw6bwVxSnOTP0h6s0j3ubBpUmjopvbwynMHyy2AIPWhXbmfVC8pEJD~OXMloiY~hkPN66CMXqEVB4o0d9L4vPQV0p39NRAs-NWgpbc4-5IIe4XHPIblI70XAvZQ8cqOllph4-YneIUBxQvXmiQIGyQniPFbz9SsNu7Whm-uiq4lG17Zxss6RBinf~qF243viTEjZER0Gml6rYva~GqEFUlaNxAg__&Key-Pair-Id=K2W722D70GJS8W)
![[線分AC上にあるときに線分CPの長さが最小となる]ことはわかるんですけど、なぜそのことに... - 2](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1550575/thumb_l_16940868868730.jpg?Expires=1787347314&Signature=C2VaQqs3ZmAwlMmYfDMImk5YAsRSkWf0Uq5~FUbCAAoZ4cmo-vlg0u9ltQCzX17lsIu9wcBZe67lYS5fOjZnyBjke1fe3cuZLO14uqfzJxl2JZGrJfylN232Tug7I6u~knh4LZ99Bv7PPR8IPygL6X4vgpW~kW5lwu0ZsGGfjIwmwsJ4NaCLGByZcME8sZqVhOZVJ006HbHgI8JYcv260G7AvxXNAeBx7qR74LodsqUCfRxYYn076QEBT5uaiUCo5kD8KVwZe3vkQBWhZCteMhT9sLOgLV5jyZ3~uGzbraqzXSc8YGBg5Geys4xHjBKvdp6qqfxsDA8n2wXDzvmcAw__&Key-Pair-Id=K2W722D70GJS8W)
なるほど！ありがとうございます🙇✨