(2)の問題 二枚目の写真は自分で計算してみて(z-y)(x-y)(x-z)になったけど、これってあってることになりますか？そうじゃないと、なぜ違う？？

基本例題1.5 因数分解(対称式·交代式) 次の式を因数分解せよ。 (1) a(b+c)?+b(c+a)*+c(a+b)?-4abc (2) x(y°-2)+y(2?-x')+z(x°-y) 28 ;足 CHART OSOLUTION 対称式·交代式の因数分解 1つの文字について降べきの順に整理する ートフォ x+●x+ 解答 研 Libra= aについて降べき。 理する。 (1) a(b+c)+6(c+a)°+c(a+b)°-4abc =a(b+c)+6(c+2ca+a')+c(α+2ab+6°)-4abc =(b+c)α°+{(6+c)?+26c+2bc-4bc}a+bc?+6°c =(6+c)α+(b+c)?a+bc(b+c) =(6+c){α°+(b+c)a+bc} =(b+c)(a+b)(a+c) =(a+b)(b+c)(c+a) 山 人 1 a+●a+ 介 (b+c)が共通 ー4£ 籍掲載。 *これを答えとして できま 介輪環の順に整理 xについて降べきの。 (2) x(y°ー2)+y(2-x)+2(xーy) =(-y+z)x°+(y°ー2)x+yz-y°z =-(y-z)+(y+2)(y-z)x-yz(y-2) =-(y-z)(x"-(y+z)x+yz) =-(y-z)(x-y)(x-z) 理する。 教科 数学 (y-2)が共通路」 理科 DG-3 合これを答えとしても (xー2)(216)(-x)= *輪環の順に整理。英語 INFORMATION 国 3つの文字についての式は, なるべく 輪環の順に書くようにすると 式が見やすく,書き落としや間違いを防ぐことができる。 ※2 動 和:a+b→b+c→c+a 積:ab→ bc-→ ca 10-0ーコ-91-5: RACTICE … 15®次の式を因数分解t α'b+qhf+

訳して欲しいです🙏

M: Welcome to City Library. My name is Brian, and I'mavolunteer guide here. Before you enjoy our library, I'd like to tell you some things about this library. This building was built in the seventeenth century, and it was originally usedas a museum, so you can still see some paintings here. Our library is especially famous for several oil paintings from Europe. If you'd like to know more about the history of this building, we have a great program at the theater on the first floor. We show a movie about this building twice every hour. You need to get a ticket for the movie at the information desk, but the ticket is free. Now, I'll tell you some rules and information of our library. First, you cannot take pictures of the paintings on the second floor. However, you may take pictures here on the first floor. Second, do not eat or drink in any rooms in this library. If you get thirsty or hungry, there's a cafeteria next to the theater. Pizza and spaghetti are served for lunch between eleven a.m. and one p.m. Also, you can get some snacks there all day long. The library closes at five o'clock. There is a gift shop on the first floor that stays open until six p.m. You can get gifts, such as cups and Tshirts, for your family and friends. Als0, there is a nice, quiet garden behind this building. Many people enjoy reading books there. The garden closes at the same time as the library. OK, now please enjoy our library! te mee

英作文の添削をお願いいたします( .. )♡

報を見きわめて し、活用する力)についての英文を読んで, あなたの考えを,(条件]と[記入上の注意)に後。 People need information literacy skills, Some people say that every elementary schet student should start learning these skills at sch0ol. What do you think about this idea? 次のinformation literacy skills(情報リテラシー:目分が て40語以上50語程度の英語で書きなさい。(10点) (条件) 質問に対する自分の考えを, その理由が伝わるように書きなさい。 【記入上の注意) 0 【記入例にならって, 解答欄の下線」 * 符号(,.?!など)は語数に含めません。 50語を超える場合は, 解答欄の破線」 ② 英文の数は問いません。 I下書き欄」は、必要に応じて使ってかまいません。 【記入例 の上に1語ずつ書きなさい。 で示された行におさまるように書きなさい。 Hi! I'm Nancy. I'm from America. Where are you from? is April is Ken's birthday, too. 2, 2001. It 50時 2019年-埼玉県(学校選択)(60)

この中で取り除いたほうが良い文が1文あるそうなのですがどの文か分かりません！ 私は②と選択したのですが解答が無いので正解を教えて欲しいです🙇⤵︎

問2 27 Internet users are exposed to advertisements on social media, in search results and on many websites. Most are "targeted advertisements," which are based on the past record of a person's online activities and are related to his or her personal interests. O These personalized advertisements are considered effective marketing tools as they allow advertisers to reach out to potential customers. 2 However, internet users have pointed out some of the negative aspects of these ads. 3 First, many users are disturbed or annoyed by the ads which pop up constantly and don't seem to go away. @ There isa good chance that they receive ads for goods or services that perfectly match their interest. They also feel uneasy about the way their browsing history is tracked and their personal information is collected.

英作文の添削をしてもらいたいです！主に文法・語法 お題は“When we browse the Internet, we are always exposed to customized information. What do you think about that?”... 続きを読む

なぜ③が答えになるのですか？？

問2 Mr. Húbert, his 11-year-old son Mike and 14-year-old daughter Mary, are free on Friday and Saturday, so they plan to join a bus tour. They need meals and their budget is $300. Which tour on the list are they likely to に choose? 32 大男 0 City Morning Tour 11さいの常 太4さの年 全か日 oing 2/City Night Tour 1Ae 300 レA内 O) Evening Tour and Night Cruise の 1 Weekend Excursion to Mt. Beckles meal メ等 さか Q

日本が貿易を行うようになってからの輸出品、輸入品の移り変わりについて教えていただきたいです😭🙏🏻

このエッセイどういう構成で書けばいいですか?? 相違点と共通点どちらも述べないといけません。 イントロ、ボディ、コンクルージョンで教えて下さ い

Ecuador culture). What are the similarities and differences between USA and Ecuador? Include specific information or examples.

aが当たる確率は　のところってaが当たってbがはずれる確率のことですか？ 黄色チャートです。

20本のくじの中後,当たりくじが5本ある。このくじをa, b2人がこの順 0 基本例題36/確率の加法定理(順列) サ合跡 COO0。 82 DO00 20本のくじの中に, 当たりくじが5本ある。このくじをa, b2人がこのに に,1本ずつ1回だけ引くとき, a, bそれぞれの当たる確率を求めよ。大 し,引いたくじはもとに戻さないものとする。 |p.284 基本事項8 CHART S 率部で出娘 88 lOLUTION 確率 P(AUB)A, Bが排反なら P(A)+P(B) … bが当たる場合は, 次の2つの事象に分かれる。 A:aが当たり, bも当たる B:aがはずれ, bは当たる TAAHO よって, 事象 A, Bの関係(ANB=D かどうか)に注目する。 なお,確率の乗法定理 (p.310 参照)を利用してもよい。 解答 aが当たる確率は 5_1 sP1 20P, で 20 4 次に, a, b 2人がこの順にくじを1本ずつ引くとき,起こりう| () るすべての場合の数は このうち, bが当たる場合の数は A:aが当たり, bも当たる場合 B:aがはずれ, bが当たる場合15×5=75 (通り)出( A, Bは互いに排反であるから, 確率の加法定理により, 当東 ま会正復支日 20P2=380(通り) 12本のくじを取り出して、 a, bの前に並べる場合 がー sP2=20(通り) の数。 正白①中の bが当たる確率は の中で動が 20 75 380 95 P(AUB)=P(A)+P(B)= 380 1 380 4で出 事象 A, Bは同時に起 (ト+)(@+1) こらない。 INFORMATION 当たりくじを引く確率は同じ 上の例題において, 1本目が当たる確率と 2本目が当たる確率はともに- 前出 で等しい。 一般に,当たりくじを引く確率は, 引く順番に関係なく一定である。 また,引いたくじをもとに戻すものとすると, 1本目が当たる確率と 2本目が当たる 確率はともに一である。したがって

誰かこの問題解いて欲しいです

2 次の対話文を読み, 設問(a)~(e)にもっとも適切なものを1~4の中から1つ 選びなさい。 Two friends standing in line at a store checkout. Marissa: I know I have it in here somewhere Karen: What are you looking for? Marissa: My point card. Sheesh, I have so many of them now. I can never find the one I'm looking for. Karen: I know! It's getting ridiculous, isn't it? Every store has its own, and they're all different. Hold on a second. Let me go look by the register. They usually have a sample Yeah, the one for this store is orange. Marissa: Orange? Oh, here it is. Thanks. I really wish there were a better system. Pretty soon I'll need to start carrying a second wallet. Crazy! Karen: You know what would be great? If we had just one card that we could use for every store. You know, with an IC chip in it. I think those chips can hold a lot of data. It could hold point information for every store you go to. Marissa: That's an interesting idea but wouldn't it be a little risky? What if you lost it? You'd lose the points from all your stores. And Karen: Actually, I think most point data is now stored online. anyway, if you keep all your cards in the same wallet, what's the difference? What happens if you lose your wallet now? Marissa: Yeah, I see your point, I guess. But after all, I don't mind that each store has its own point card, because I like looking through the different designs. It's almost like collecting trading cards. Karen: Then you'll definitely need that second wallet! 5 英LAEEJPKS-006