例題51) 赤線の部分が分かりません。与式がxとyの1次式の積に分解されるための条件が、①の解がyの一次式になることなのですか？

4x°+7xy-2y-5x+8y+k がx, yの1次式の積に因数分解できるように, 定数kの値を定めよ。 また, そのときの因数分解の結果を求めよ。 [類創価大) 重要例題 5T 2次式の因数分解 (2) 79 の 基本 20,46 CHARTO 2次式の因数分解 =0 とおいた2次方程式の解を利用 (与式)=0 とおいた方程式をxの2次方程式とみたとき (yを定数とみる), 判別 S OLUTION 式を D,とすると, 与式は 4{x-二 +VD.|x- の形 -(7y-5)-D. 8 に因数分解される。 D. はyの2次式であり, このときの因数がx, yの1次式と VD、がyの1次式→ D, が完全平方式 すなわち D.=0 として, この2次方程式の判別式 Da が0 となればよい。 8 なるための条件は …の 解答 (与式)=0 とおいた方程式をxの2次方程式とみて 4x°+(7y-5)x- (2y?-8y-k)=0 の判別式を D. とすると D,=(7y-5)°+4·4(2y°-8y-k)=81y?-198y+25-16k 与式がxとyの1次式の積に分解されるための条件は, ① の解 がyの1次式となること, すなわち D. がyの完全平方式とな ることである。 D.=0 とおいたyの2次方程式 81y?-198y+25-16k=0 の 判別式を De とすると inf. 恒等式の考えにより 解く方法もある。 (解答編 の およびp.55 EXERCISES 15参照) 合 D.が完全平方式 → 2次方程式 D=0 が重 解をもつ ター(-99)?-81(25-16k)=81(11*ー(25-16k)}=81(96+16k) De 4 計算を工夫すると 99°=(9-11)=81-11° D=0 となればよいから 96+16k=0 このとき, D.=81y-198y+121=(9yー11)? であるから, ① の解は よって k=-6 (7y-5)±、(9yー11)_- (7y-5)±(9y-11) (9y-11)=|9y-11| であるが,土がついて いるから,9y-11の絶 対値ははずしてよい。 X= 8 8 y-3 4 すなわち x=,-2y+2 (与式)-(ュ-)ュ-(-2y+2) y-3 4 括弧の前の4を忘れな いように。 ゆえに =(4x-y+3)(x+2y-2)

(3)の問題です。 答えはdon’t have to なのですがその答えを導く過程を教えてくれませんでしょうか？🙇‍♂️

w accept things as they are. (ものごとをあるがままに受け入れるよりしかたないさ.) 『 VU AIU V *as they are 「あるがまま 19 ST S Ao enonig po biong or -EXERCISES 0 (圏→別冊 p.1 |次の各文の( )内のうちの適当なほうを選び,日本語に直しなさい。 1)(Can, Will) I use your dictionary? -Yes, certainly. 2) He(cannot, must) be out now. He doesn't answer the phone. 3) Must I leave now? - No, you (aren't able to, don't have to). You(may, must) ask me any question. 5) Mr. Wilson isn't so young, but he (must, can't) be over forty. 4)

至急‼️上の問題と下の問題分からないです💦教えて欲しいです🙇‍♀️

Exercises 英文法2-2 1( )内に下の語群から適切なものを補いなさい。 A 1. I ate a hamburger and ordered ( 2. Do you have any pencils? May I borrow( 3. She carried a case in one hand and an umbrella in ( 4. I can't do questions 4 and 5, but I've done all ( 5. Bacteria are everywhere; some are helpful, while( ) cause disease. 6. Of the seven people here now, one is from China, three are from the US, and ( ) from France. [another / one / others / the other / the others] )内から正しいほうを選びなさい。 2 ( 1.(All/ Every) the students in the class have passed the examination. 2.(All / Every) children should be taught how to read and write. B 3. (Each / Every) of our rooms has an internet connection. 4. We all got wet because (all / none) of us had an umbrella. )内に both, either, neither から適語を選んで補いなさい。 C 3 1. I invited Jack and Jill to my party, but ( ) of them came. 2. Tom and I hadn't eaten breakfast, so ( ) of us were very hungry. 3. Would you like tea or coffee? You can have ( 4. A: Which jacket do you prefer, this one or that one? B:I don't like ( ) of them.

明日までなので教えて欲しいです！

Empower II Essential 2日本語に合うように,英文を完成させなさい。 Genre の Accord ing to the news on TV that Japanese men live to age 80 and Japanese women live to 86 on average. 2 Progress in medicine will allow people to have active. ® _recent reseach_ has proveh longer lives. Older people today are very that about one-third of them exercise three days a week or more. の Getting regular exercise will keep them healthy and make them feel young er のテレビのニュースによれば,日本人男性の平均寿命は80歳, 日本人女性は86歳です。 2医学の進歩により,多くの人が長生きすることができます。 3 最近の調査によれば,彼らの約3分の1が1週間に3日以上運動をしています。 の定期的な運動が, 彼らを健康にし, 若返った気分にさせています. (feel younger)

教えてください

A Choose the correct definition for the underlined words. 1. They developed the new car in cooperation with Japanese engineers.() 0eriw ( 2. Take care to avoid any trouble on your journey. ludeo ) Tdo hot nc dilw qu abgega slius 3. Many birds are flying overhead. 4 Oh. that man threw trash from his car window! 91uiai (aaiod) d po. boubires epe dniag aod () Breakinset 5. When I read English newspapers, I can read 150 words per minute. ③ working together b things that are no longer useful © above your head ④ for each 1O ぐ大の anul gob yem © to prevent something from happening B Choose the correct word for each sentence below. 1. The satellite is now in ( orbital / orbit ) around the moon. 2. Can you ( measurement / measure) the length between point A and point C? 3. I got a lot of exercise and lost a lot of ( weight / weigh ).on ei orvariod aid T S roraanmod

英語表現の並べ替えの問題なのですが、3番が分かりません。

regularly. 20パーで 下の生徒か, 定期的に運助したのでよい成積かとれたと答えました 3. I[good/ the idea / agree with /is/ that / exercise ] for our health. 私は,運動が健康によいという考えには賛成します。

⑤です。何故beになるのですか？時制の一致はしなくても良いのでしょうか？

1. The doctor told me ( to do not / not to do ) any exercise for twd weeks. 1( )内から適切なほうを選びなさい。A BC 2. He seems to ( be/ have been ) nervous recently. 最」所 3. Kittens need ( to be taken/ to take ) care of by their mothers 4. My sister seems ( to thinking / to be thinking ) about her friend 5。 She seemed to ( be / have been ) fine when I met her.

解答冊子を無くしてしまったので、分かる方、教えてください

Mr. White's job has ( 1 ) to do with computers. 2 someone の nobody FRAME 100 3 anything Fortu D eit. O something 開外 口12 EXERCISE A 空所に入れるのに最も適切なものを選びなさい。 Beca 口13 very 口01 ノwas a present from my father. 人 の m 2 My old this camera の This old camera of mine Jagm aomけらmoa L O My old camera of this くセンター試験) 3 This my old camera Tdil ot mi The population of Tokyo is much larger than ( bn) of New York. の which 口14 のAI 口02 の all くつくば国際大) 3 one ③M 2 that TO Aonm This year's fashions are quite different from ( ) of last year. 3 these 口15 ( pro 口03 の those の that 2 them 〈近畿大) 1shy のE 口04 )who would like to go ona trip should put their names on the list 3 Ones の They 2 Those の These (亜細亜大) wal erd 19 aloT ni St 口16 You 口05 My mobile phone is broken. I must buy ( ) today. JD Oit W9n d ot vs 2 that 3 this 4 one 〈福岡国際大) 口06 oTo apLojre aorga M I found these keys. Are they ( )that you lost yesterday? 0 one EXERCISE 2 ones 3 the one Jsdi 4 the ones 900 〈日本大) 口01 St 07 There are two reasons for our decision, and you know one of them. Now I' tell ( 9io S 19ddo eri D O another 1odtone (A 2 other OVす 3 the other 4 the others 口02 I m owi bejieiv I 口08 Havinga good idea is one thing. Having a successful business is ( くセンター試験) niD another 3 the others 2 other ud 2l 0uet gniggoda tnew i 4 the another TeO 910n 口09 I have five boxes here. One is full of books and ( ) are empty. 〈東京経済大) O other 3 the other ② the ones 80 JaomlA E sbens) 19vd ) 10 Yoko and I didn't know the time because ( )of us had a watch. の the others D04 〈関西学院大) の both on 2 either ③ neither の not (湘南工科大 50 New Frame 650 ロ

解答冊子を無くしてしまったので分かる方、教えてもらってもよろしいですか？

きて、第2学年では1 今後の新型コロナウイ ございますので、ご の候、保 の教育活動に多大 (食) →*設 EXERCISE C >> ( )内の語句を並べかえて英文を完成させなさい。 erlw ① 口01 あの国には私たちの国の約10倍の国民がいる。 nnls ndi tom on (四天王寺大) 口02 私はそんなことはしません。 I(to/better / than / do/know ) such athing. gTel 9 (玉川大) 口03 ビジネスで成功するための最も大切な要素の1つは, 信頼に基づく顧客との関係を築 くことである。 mne One of ( most / factors / in /important / the ) business success is building customer relationships based on trust. 口04 その男の子はこのクラスでいちばん利口な生徒だ。 (other / as smart / student / is / the boy / as / no ) in this class. 〈魔導大) 口05 (finish/we/our / work / quicker / the ), the sooner we can leave. (東海大) 口06 For nature lovers, ( is / more / nothing / refreshing / than ) pure cold water from a mountain stream. d芝浦工業大) 107 あなたの体重は私の体重の約3分の2だ。 Your weight ( mine / as / two-thirds / as heavy / about / is ). Dai one ((センター試験 Oqed an don ari od Nd 〈関東学院が y ) 年10月1日 関東近隣の伝を 玉県)文休寺 学する順番 4名 計 349 日生徒 (予定 で連絡

回答教えてください

The Mission of the Olympics Exercises lood wod onod Iatooe T0OY 9moont uoY otil gGb g mou Fill in the blanks with the proper words. A nbrslno e'no 9p Tuov 1. My lunch consists ( ) salad, soup and sandwiches. xie od veamoY ) helping people suffering from hunger. ) the bad weather. 2. He dedicated himself ( 18c6 e T9ve 3. The game was canceled due ( 4. The climbers finally made ( to the top of the mountain. P Taunon ont) to of Taob 5. The people praised her ( ) her courageous action. T9 amgbun etw bre nenogar B Change the verb in the parentheses into its proper form. 1. I(watch) the TV show three times ifI watch it again. do 2. Tom is proud of ( pass) the difficult test last year. 3. I thanked him for ( do) so much for me. bhim orolad 9 4. I'm ashamed of ( act) like a child last night. olgpeg to 7od an yoAma J9g of basi blgoat tunme asd worla esibuaa C Arrange the words in the proper order. DY TomedTolbenm soat minnd 1. The concert ( by / finished / have /will) 8:00 6ottシovotqnl 9aronoxe 2. Mike(five / have / moved / times / will ) if he moves again. low 3. By the time her plane arrives at the airport, I (for / for / have / her / hours / three / waited / will ). 4. The child finally ( admitted / broken / having / the dish ). 5. They (at / depressed / having / the game / lost / were) yesterday. Complete the following English sentences to match the Japanese. 1. 父は明日で30日間休みなしで働くことになるだろう。 My father without a break tomorrow. 2. 彼女はオリンピックで金メダルを獲得したことを誇りに思っています。 od Tbal elo Ncbnela rab She at the Olympic Games. em hgd.ueup Tekml ola Tnemi let-nem 39