$Q(-2) = (-2)^4 + 4.(-2)^3 + 2. (-2)^2 - 4.(-2) + 1$
$= 16 + 4. (-8) + 2.4 + 8 + 1$
$= 16 - 32 + 8 + 8 + 1$
$= 1$
$ Q(1) = 1^4 + 4. 1^3 + 2.1^2 - 4.1 + 1$
$= 1 + 4 + 2 - 4 + 1 $
$= 4$
Q(-2) => x=-2
Thay x=-2 vào Q
=> Q= $(-2)^4$ + 4. (-2)³ +2. (-2)² -4.(-2)+1
=> Q= 1
Vậy Q(2) = 1
Q(1) => x=1
Thay x=1 vào Q
=> Q= $(1)^4$ + 4. (1)³ +2. (1)² -4.(1)+1
=> Q=4
Vậy Q(2) =5
Viết các phương trình hóa học (ghi rõ điều kiện) biểu diễn những chuyển hóa sau: FeS2 → SO2 → SO3 → H2SO4 → CH3COOH
wrtting about films ( có kịch bản nha) cẦN GẤP
đặc điểm dân cư ,xã hội của khu vực đông nam á
chứng tỏ rằng B=1/2 ² +1/3 ² +1/4 ²+ 1/5 ² +1/6 ² +1/7 ² +1/8 ² < 1
Find the word which has a different stress pattern from the others. l. A. another B. plentiful C. dangerous D. limited 2. A. attention B. pollution C. holiday D. effective 3. A. expensive B. different C. abundant D. convenient 4. A. petroleum B. advantage C. enormous D. tendency
Hãy làm giúp mình với từ câu 1-12
Bài1 chia động từ 1 my new hi-fi kept(make)..........a funny noise 2 none of the student (finish)........the exam 3 As soon as she arives at shool the children (begin).......cheering 4 he said he usually saw them (play).....football here 5 this house(build).........3 years ago Bai2 Viet lai cau 1 ''Do you realize what the time is,Steve''?asked Chris Chris asked........................................... 2 John saved 8 a week ,so that he could go on holiday in the summer John saved 8 a week in order............................... 3,That's the strangest film I've seen! I've seen................... 4 Lan forgot her birthday and so did I. Lan didn't...................................... 5 I saw Jane standing outside the shop Jane was............................. 6 My father is more impatient than my mother my mother ................................. 7, As he got off to the bus the police stopped him As he got off ............................ 8 He won't do it unless ou pay him in advance He'll do it only...................... 9 Remind her,or she will forget If.............................. 10 She didn't ring a bell but she walked in She walked in without................................. Bai3 hoàn thành câu dựa vào từ gợi ý 1, I /go/school/early/avoid/traffic jam/because/I /live/far/school 2,I /call/Hoa/yesterday/invite/her/my/birthday/party 3,My/mother /give/me/English/dictionary/help/me/improve/my/pronunciation 4,You/should/write/one/example/sentence/each/new/word/remember/how//use/them 5You/should/try/different/way/learn/new/word/find/best/way/for /you 6,Residents/my/neighborhood/organize/community/meeting/last/night/siscuss/some/environment/issue 7,You/should/balanced diet/so as/keep fit/stay healthy 8, Although/scout/mainly/boy/there/be /organizations/similar/girls 9,We /hope/give/more/green/color/town/and earn/money/group 10, We/sometimes/have/go/school/very early/do/class duties GIARI GIÚP MIK VS Ạ SẼ ĐÁNH GIÁ CÂU TL HAY NHẤT+VOTE
12,74 = 10 + 2 + 0,7 + ........ Cần điền vào ô trống số ; A, 40 B.4 C.0,4 D.0,04 Mik đg cần gấp
Tìm a, b biết B(x)=a(x-1)^4 - 2020x+b với nghiệm là x=1 và x=2
Chưng cất nước hoặc chưng cất rượu là ứng dụng của hiện tượng vật lý nào? Giúp mk với ạ!!!!!!!!
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