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英語 高校生

模範解答がなくて困ってます(^^;) 助けてください!!! UNICORN English Expression1の110〜117です

>LESSON 6 EXERCISES A Choose the correct words. 1. My grandfather usually ( eats/ is eating ) rice for breakfast, but this morning he ( eats / is eating ) bread. 2. It( snows / is snowing / will be snowing ) by the time we arrive at the village. 3. What were you ( did / doing ) when I called you? 4.1( didn't hear / wasn't hearing ) the bell because I was ( listened to / listening to ) music with my earphones. 5. Everyone ( knows / is knowing ) the news. 6. This fish ( smells / is smelling ) bad. EXERCISES n A Follow the example and rewrite the sentences. ex. She is a good tennis player. (You) You are a good tennis player. nod ed sH 1. They usually watch TV in the living room. (He) 2. Two students are absent today. (last Friday) 7. I didn't answer your phone call because I ( took / was taking ) a bath. 8. My aunt is always ( complains / complaining ) about her job. 3. Every night the girl reads a book before she goes to bed. (Last night) hcar B Put the sentences into Japanese. 1. Our school festival is taking place next week. 2.I was reading comic books all the time when I was a boy. B Complete the sentences. 1.“Your racket is too old, isn't it?" Vet O d1O “Yes. I( ) going ( ) buy a new one this weekend.” 3. We are moving to Kyushu next month. 4. A duck is dying near the river. 5. She was studying English all day yesterday. (買いに行くつもり) ) do this afternoon, Emily?” (するつもり) top co 2.“what( “I think I ( 3.“When ( ) going ( ) go to the beach by bike." ) school( ) in your country?" (始まる) C Change the verbs into the correct form. 1. Look! The sun ( rise ) above the horizon. 2. My dog ( lie ) on the floor when I came home. 3.I( have ) supper when he called on me. 4.I ( belong ) to the music club in my junior high school days. 5. My sister ( play ) the piano now, but she ( not like ) playing the piano. “It( ) in April.” C Choose the correct words. 1.(Are / Do/ will ) you know about the accident? 2. Ken was afraid that it ( is / was going to / will be ) rain in the afternoon. 3. If it ( rains / rain / will rain ) tomorrow, the game will be postponed. 6. They ( take ) the exam at this time tomorrow. 4. Here ( comes / come / coming ) the sun. D Put the words in the correct order. 1.昨晩は10時前に寝ました。 I went ( bed / before / last / night / ten / to ). 2.数分で戻ります。 I(a/back / be / few / in / minutes / will ). 3. あとで電話をするって約束するよ. I(I/phone / promise / will / you ) later. ean E Answer the questions. 1. What do you usually do in the morning? 2. what did you do yesterday evening? 3. What are you going to do this weekend? 2 LANGUAGE FOCUS 6-

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数学 高校生

シャーペンで囲んだ1がどこから来たのか、最後の下の方の答えがどうやって求められたのか教えてほしいです

5 整式の約数·倍数 例題 (2) 2つの整式の最大公約数が x+1, 最小公倍数が x*-x? である。 き,この2つの整式を求めよ、 水S 黒味 ぞれ求めよ。 EBOFE Sス万 整式の約数, 倍数を求めるには、まず因数分解するとよい。 (2)最大公約数が x+1 だから, 2つの整式を A, Bとすると、 A=(x+1)A', B=(x+1)B' (A', B' は互いに素な整式) と表すことができ,最小公倍数は,(x+1)A'B' となる。 「十 S+ x5+x ト それぞれを因数分解 解答(1) 2.x-5x-3=(x-3)(2x+1) 8x°+1=(2x+1)(4x°-2x+1) 最大公約数 2.x+1 最小公倍数(2.x+1)(x-3)(4.c°-2x+1) な式 より, 十っ十 ナ x-3 と 4x°ー2x+1 は互いに素な整式 開して整する (2) 2つの整式をA, Bとすると,整式 A, Bの最大公 約数が x+1 であるから, A=(x+1)A', B=(x+1)B' + (A', B' は互いに素な整式) と表すことができる。 最小公倍数は、(x+1)A'B' であるから, 気+0日=(x+1)A'B'=x*-x* L=A'B'G x*ーx=x°(x°-1) け したがって, A'B'=x°(x-1) 11と B'は互いに素な整式であるから, A', B' は, 0ー1- 小1-よって, 求める2つの整式は, 両辺をx+1 で割る。 x? と x-1 またはx°(x-1)と(1) °(x+1)と(x+1)(x-1) または x°(x+1)(x-1)とx+1 ハち人 xと x(x-1) だと, xが公約数になり, 互いに素でない. A=(x+1)A' B=(x+1)B' C11S

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