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数学 高校生

線で引いたところをなぜ(x➕y)(x➖y)としないんですか?

y+4 -3y+2 -2y+6 (2) ab+ab+a+b-ab-1 =ba²+(62-b+1)a+b−1 =(a+b-1)(ba+1) =(a+b−1)(ab+1) 1 b-1b-b b b-1 1 ← αについて b-b+1 a²b+ab²+a+b−ab−1=ab(a+b)+a+b−ab−1 =(a+b)(ab+1)-(ab+1) =(a+b-1)(ab+1) 練習 次の式を因数分解せよ。 ③ 18 (1) ab(a+b)+bc(b+c)+ca(c+a)+3abc (1) (C)=(b+c)a²+(62+3bc+c²)a+bc(b+c) ←項を組み 通な式が現 り出してい (2) a(b-c)+b(c-a)+c(a ←aについ =(a+(b+c)}{(b+c)a+bc} =(a+b+c)(ab+bc+ca) b+c →b2+2bc+c² 1 b+c bc b+c bc(b+c) bc b²+3bc+c² (5)=ab(a+b+c)-abc+bc(a+b+c)-abc +ca(a+b+c)-abc+3abc =ab(a+b+c)+bc(a+b+c)+ca(a+b+c) ←式の形 で,各項 えて引 える。 6y+8 =(a+b+c)(ab+bc+ca) y-1 (2) (5)=(b-c)³a+b(c³-3c2a+3ca²-a³) 5y+7 +c(a³-3a2b+3ab2-63) =-(b-c)a³+((b-c)³+3bc(b-c)}a-bc(b²-c²) =-(b-c)a³+(b-c){(b-c)²+3bc}a-bc(b+c)(b-c) =-(b-c)a³+(b-c)(b²+bc+c²)a-bc(b+c)(b-c) =-(b-c){a³-(b²+bc+c²)a+bc(b+c)} =-(b-c){(c-a)b²+(c²-ca)b+a(a²-c²)} =-(b-c){(c-a)b2+c(c-a)b-a(c+a)(c-a)} =-(b-c)(c-a){b²+cb-a(c+a)} tak. ←6-1 ← 整理 =-(b-c)(c-a){(b-a)c+b²-a²} =-(b-c)(c-a)(b-a){c+(b+a)} =(a-b)(b-c)(c-a)(a+b+c) 練習 次の式を因数分解せよ。 ← 整理 ③19 (1)x+3x²+4 (2) -11xy²+1+ (3) x-9x+16y (1) x+3x²+4=(x+4x²+4)-x²=(x²+2)²x² ={(x²+2)+x}{(x²+2)−x} =(x²+x+2)(x²-x+2) (4) ← (2) x-11x2y+y4=(x²-2x²y²+y4)-9x²y² = (x²-y²)2- (3xy)²← ={(x2 y2)+3xy}{(x²-v²)-3xy} =(x²+3xy-y²)(x²-3xy-y²) (3) x-9x2y²+16y={x*-8x²y²+(4y²)²}-x²y² =(x²-4y²)-(xy)² +3,lic² - (³) + h (C²-³ c²α ·³ cα² -α″) ((x+

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英語 高校生

全部教えて欲しいです😭

1 Choose the best answer to fill in each blank. (1) Most stores in the Seaside Mall used to ( ) at 10:00 a.m. every day. 1 open 2 opens ③ opened 【関西学院大】 ④ opening (2) There were many people who ( ) to be served at the (1) 参 p. (2) 【立教大 】 その他 参 Þ counter before me. 1 had waited 2 have waited ③ was waiting 4 were waiting (3) Stamps ) in post offices. 【岡山商科大 *】 (3) 参 「する 1 sell 2 are selling 3 have sold 4 are sold pists (4) This soup ). (4) 参 S+V ①is tasting bitter tastes bitter (5) John and his brother ( days. Something must have 1 were absent 3 have been absent 2 is tasting bitterly 4 tastes bitterly from school for the past nine happened to his family. (5) 参 状態 2 absented 4 are absent (6) "Do you think Margaret will take one of your little cats?" (6) 参 第 "I don't know. She seemed ( ) in them, however." see ①to be interest 2 interesting 【 青山学院大 】 3 interested 4 interestingly (7) My mother has just ( ) to the supermarket. Now she's (7) home. 1 gone went ③3 visited been (8) Satoshi has wanted to ( ) his girlfriend since he was in (8) college. O marry 2 marry to 3 marry with 4 get married (9) Mr. Wallance will meet his friends at the restaurant to ( ) about their vacation plans. (9) 【京都外国語大 * 】 1 discuss 2 mention 3 express 4 talk (10) I ( ) for a parking place for half an hour, but I can't find [(10) 【亜細亜大】 one. 1 look 2 could look 3 will look 4 have been looking

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TOEIC・英語 大学生・専門学校生・社会人

英語の宿題です。アンサーお願いします🙏🏻

..2 ◆ B.E.21 POINT) ... 3 参 p.189 B.E.21 2* く. ...4 p. 190 (6) ? (read the book) makes me feel better. (play the guitar) 2 各組の文を意味の違いに注意して日本語で表しなさい . (1) (2) (@My mother doesn't like coming home late. ⑥ My mother doesn't like me coming home late. a Would you mind closing the door? ⑥ Would you mind me closing the door? 3各組の文がほぼ同じ意味を表すように()内に適語を入れなさい. I am sorry that I am late. am sorry for( ( am sorry that I told you a lie. I am sorry for( )( 2 232). ) you a lie.nt at he wa byp m) (199m01 >) captain of the team. (le) a mistake. Tom was proud that he was captain of the team. (1) ”ある. (2) 広いる. (3) いる. (4) The girl denied( ・・・5 9 .6 -7 3 Tom was proud ( The girl denied that she had made a mistake. (L)( 44 日本語に合うように( )内の語句を並べかえなさい. (斜体の動詞は適当な形に直すこと) (1) 寝る前に歯をみがきなさい. (before, your teeth, go, brush) (2) 私たちはプールで水泳を楽しんだ. (we, in, swim, enjoyed) (3) 弟は動物の絵を描くのがじょうずです. (draw, good, is, animals, at) My brother to bed. the pool. (1) (4) 私はロボットを作ることに興味をもっています. (make, in, interested, robots) I am ★ (5) 彼女はかんしゃくを起こしたことを恥じている. (lose, of, ashamed, her temper) way bludW blow S Goob She is 45

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英語 高校生

アップグレードの助動詞の問題です。 よければ教えて頂きたいです。

2助動詞 22 We could not help but ( laugh ) at the sight. laughed 3 to laugh 23 We can't thank you ( ⑪very 2 too laughing ( 神奈川大 ) ) much for your kind help. We owe our success to you. ③ so ④as 24 彼はうそをついたのだから, アンが怒るのももっともなことだ。 He told a lie, so Ann ( ) get angry with him. Omay well 25 You might ( as well may as well ③may as (福島大) behnamob yo fiom might as well BE (浜松大) ceremony. ( 青山学院大) ) call a taxi. Then you will be on time for the wedding cere 2 as well as ③well so well to virus ☐ 26 You ( ) expect a river to flow backward as hope to persuade him into resignation. Omay well might as well had better would better (同志社大) 27 I would rather walk than ( ) a taxi. 1 take 2 taking ③3 to take ④taken ( 青山学院大 ) 28 One should not rely completely on first impressions, for appearances ( ) be deceiving. O shouldn't 2 have to 29 皆様のご多幸とご健康をお祈りします。 30 ③ mustn't it were no ) you all be happy and well! (a) It is not good that you didn't ask her name. (b) You ( ) have asked her name. ①ought to ②need 3 must ④can (大) work. OP ( 獨協医科大) (関西学院大) may 31 My sister ( ) here by now, for she took the early train. Omustn't have arrived 3 might arrive shouldn't have arrived ought to have arrived (上智大) "So the thief ( 32 "The window was unlocked and there is mud on the floor." come into the apartment that way." O might 2 must have ③ ought to A should have (学習院大) 33 Would you like ( ou like ) that work? 19 :以下 Ome to do to do to me O to me do 4 to me to do (名城大)

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