解答にある条件①についてです。 何故、aの2乗-bの2乗=0をa=bとしてはいけないのでしょうか？

Check 例題 38 平方して虚数になる複素数 120円 2乗して18iとなる複素数を求めよ. L(昭和女子大) 考え方 解答 求める複素数をz=a+bi とおくと, 2乗 (平方) して - 18i となるので, z2=-18i つまり. (a+bi)=-18i を満たす実数 α, bの値を求める. 求める複素数を a + bi (a,bは実数) とおく. 題意より, (a+bi) = -18i であるから. a²+2abi+b2i=-18 響 より ²-62+2abi=-18i したがって, d² - 62, 2ab は実数より, WE (a²-b²=0 2ab=-18 ...... ② ①より, (a+b)(a-b)=0 1. (200) + (18+): 2227532 GROUESEINE 01 複素数の相等より, SC380 ** 1=(18-5p) (18+D] =DD²² 与えられた式をPhi=-1考える。 (i)a+b=0 つまり、6=-αのとき ②より, 2a(−a)=-18 Sa+bi=c+di deta=c, b=d Appl a+b=0 tla-b=0 ib+5=8 id+072(-D) +5)+(3+n)=a+s a²=9 よって,(i),(ii)より 求める複素数は,) + bo 3-3i, -3+3i 2-2a²=-18 より, +(bd 2 したがって, α=±3 b=-aより,26=73(複号同順)a=3のとき, (ii) a-b=0 つまり, b=α のとき...... 0=b+d b=-3 ②より, 2a²=-18 だから, a²=-9 (=d+hn αa は実数より, d2≧0 だから,これを満たすαの値は ない. b a=-3のとき. b=3 α2≧0 なので, 右 と矛盾する.

わかりません💦どなたか教えてください💦 お願いします🙇‍♀️

DAIGAKUSEIの10文字を1列に並べるとき 子音がD, G, K, S の順に登場 するものは何通りあるか。

･質問です・ 夏休みの宿題で作文あるじゃないですか 僕それめっちゃ苦手で毎年苦戦しているんですよ でも、作文って構成？を考えればすぐできるって 言われるんです。 その構成（書く順序）を教えてください！ 出来れば、生活作文と読書感想文の構成を 教えてください！ ... Read More

4番になぜwhomが入るのか、解説お願いします🙇‍♀️

)内に適語を入れ, 13~16は( 1~12は( 17は同意の文になるように書き換えなさい。 1. This is the room ( 2. Did he tell you the reason ( 3. He was born in the year ( 4. I called on Tom, ( 5. The Seine, ( 6. Akita City, ( 7. This is the house in ( - This is the house ( )内から適語を選択 ) the newspaper is printed. ) he wanted to go home suddenl ) World War II ended. ) I found sick in bed. ) runs through Paris, is a beautiful river. ) my uncle lives, has a lot of snow in winter ) Shakespeare lived. ) Shakespeare lived.

一応自分で解いてみたんですけど、④がよくわからなかったので教えて下さい😭😭🙇‍♀️🙏

長文を読む 1. 甲南大学 目標解答時間20分 Is In the 1920s American movies filled the cinema* screens of the world. Most were made in 郊外 Hollywood, a suburb of Los Angeles, in California. Hollywood's big attraction for film-makers was its clean air and sunshine. The movies made there were bright and clear. By the 1920s it had become the film-making capital of the world. HOT ning sibisbaste Maomhsnob vildung, Hollywood movies were made by large companies called studios. The men who ran these boowellpH ei obam eşivom NSROMA FOR STOWW studios were businessmen and their main aim was to make as much money as possible. They eslognA zo.llo eduduz si mixt boot semool 69 adı ni come do enim mobbe i soon found that one way to do this was to (1) standardize* their films. When audiences had 185s d is si BAT-silyte sii seino blowodi 16 lasins anim-mlit od zew boow lig shown that they liked a certain kind of film, the studios made many more of exactly the same kind. Solit tiedi svibnsbasız(1) 21 aninsom ni 122colo da bistars were Another sure way for a studio to make money was to (2) turn its actors into "stars." stil vlieb wone-thr 291700 Tosun sis 29 il ngibus ob es esiyor to bridomy, M vonom to jol som si zivom SAM actors who were so popular that people went in crowds* to see any film they appeared in, no matter bisbristes amosad redivom sole MD A famous star could make any movie a sure success. So the studios how good or bad it was. 21612 00 210106 21 went to great lengths* to make their actors into stars. (S) 01 ob 20ibure du bib jew They encouraged fan magazines. They ob 9 16 2016 2 e sivom vas sisMS 2012 196snt bas esnissgsm nisl noqqu set up special publicity departments* to get stories about their actors into the newspapers. The movies of the 1920s were silent. They bisbasse mod, om to spoke through expressions and movements, not in f H THE LOYAT 1500 words, and so their language was international. All over the world, from Berlin to Tokyo, from night of the week to see the ople lined up every London to Buenos Aires, tens of millions of people lined √ SU OJANE JA AJANSAZETHO A USA (X TO favorite Hollywood stars and, without realizing it, to be Americanized. AANSE AJR

2️⃣からの文で、asking〜は分子構文だと思うんですが、このaskingの主語が文脈から考えればSatomi Kawamotoだとわかるのですが、普通に考えると前の文と主語はおなじだからNitto Semio Coが主語なんじゃないかと考えてしまいます。分子構文の主語は... Read More

Startheis 1 FUKUYAMA, Hiroshima Japan make the world's first attempt to remove space debris with aluminum netting thanks to a small company here that produces fishing nets. 2 Nitto Seimo Co. was contacted by Japan Aerospace Exploration Agency (JAXA) researcher Satomi Kawamoto in April 2004, asking if it

ポイントを読み取ろうと内容を確認しようの それぞれの回答があっているかの確認をお願いします また、間違っている場合は回答を教えてください

No. Date P. 42 教 9.52 L4 S1 ① Sesame Street is a popular eclucational program. (セサミストリートは人気の(ある)教育番組です。) 2 It teaches children listeracy and other lessons. (子どもたちに読み書きやその他のレッスンを教えます。) ③ It is how offered online as well as on TV. (現在はテレビだけでなくネット(オンライン]でも配信されています。) 4 The program is famous is famous for its coloful characters. (この番組はカラフルなキャラクターで有名です。) Cookie Monter loves to eat everything, especially cookies. (クッキーモンスターは何でも食べることが大好きで、特にクッキーが大好きです。) ⑥ Big Bird is very kind and tall. (ビッグバードはとても優しくて背が高いです。) ⑦ Ernie always asks his friendl, Bert, silly questions. (アーニーはいつも友人のバートにくだらない質問をします。) ⑧ Children see each character play a unique role in the program. (子どもたちはそれぞれのキャラクターが番組の中でユニークな〔独自の〕役割を果たしているのを見ます。) ⑨ Sesame Street is shown in about 160 countries, and some characters are different from country to country) (「セサミストリート」は約160ヵ国で上映〔放映]されており、一部のキャラクターは国によって異なります。) ⑩ For example, in South Africa, you can see Meshe, a meer a meerkat. (たとえば、南アフリアでは、ミーアキャットのムシェを見ることができます。) ① He likes dancing and growing vege tables. (彼はダンスと野菜栽培〔作り〕が好きです。) ② Another example is Lily in China. (もう1つの例は中国のリリーです。) ③ She is a tiger that likes martial arts. (彼女は武術が好きな虎です。) ④4 Children around the world enjoy their own version of Sesame Street. (世界中の子どもたちがそれぞれのバージョンのセサミストリートを楽しんでいます。)

上の文とほぼ同じ意味になるように並べて下さい。

(1) His money was all stolen yesterday. = He ( a )( )( ) money ( b ) yesterday. 1. has 2. had 3. was 4. stolen 5. all 6. him 7. his 8. stole (2) They finished the work with ease. )( a )( = It ( )(b) to finish the work. 6.20070) 1. easy 2. easily 3. was 4. to 5. they 6. them 7. for 8. with (3) I didn't go to the movies, I stayed home all day long instead. = I stayed home all day long( a )( )( b ) ( 1. instead 2. without 3. but 4. of 5. for 6. to used toiverad (4) She had the kindness to show me around the city. - She ( a )( = )( b )( ) show me around the city. 8 do ted to or Sicu uodi basi ) the movies. 7. going 8. gome sveded.& zie 101.8 3 (6) I would rather take a taxi than walk in the rain. I ( )( a )( )(b 1. want 2. to 3. take a taxi 4. taking a taxi 6. to walk 7. walking 8. prefer a G 1. kind 2. so 3. enough 4. that 5. was 6. kindly 7. to 8. of 2-5 sesseib ert mot 19v0091 Ifed snipibsm air as sasszibədi ( 1 ) ) ) moita toi (5) We hope you'll return as soon as possible. = We( a )( b )( )( )as soon as possible. 1. worry 2. to 3. are 4. you 5. want 6. that 7. return 8. can ) in the rain. 5. walk taxi 5. walk 49EM XU@C<££*£1x3

この一般校の求め方を教えてください。

よう。 (2) 1,4,13,40,121,364,

14の解き方教えてください。

練習!! 初項が - 79, 公差が2である等差数列{an} において,初項から第何 14 項までの和が最小となるか。 また, その和を求めよ。 20