11番の意味わかる人いますか。英語がわからないんじゃなくて何を説明してんのか謎です

11. Paula claims that whenever you square an odd integer, the result is an decision. odd number. Is her conjecture reasonable? Justify your 12. Ursula studied the diagonals of these rectangles to look for patterns. Make a conjecture about the diagonals of rectangles. What evidence supports your conjecture?

（3）（ⅱ）を解説して欲しいです！お願いします🙇‍♀️ 赤い枠が答えです！

(3) 2次関数S(x) =D x?+ (k+1)x+(2k-1) (ただし, kは定数)を考える。 (i) y=f(x) のグラフがx軸と操するとき, k= 8 9 4000 (ただし、 8 く 9)である。 (i) y=f(x) のグラフが-3<x40の範囲でx軸と共有点を1つだけもつとき, 11 kのとり得る値の範囲は k< 10 13 14 <k, 12 k= 15 である。 2:次万程式

これは合っていますか？

1Chinese. (atthat time) end Cinese 9T thOt TS。

マーカー振ってあるところが分かりません。 答え→(21)d(23)c

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(2)の答えがわかる方いますか？ あと、できたら理由もお願いします！！

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