Giúp em với a . Em cảm ơn nhiều

Bài 4. Cho biểu thức A=x(1+x)-x (1-x)+x'(x² -1) . Chứng minh rằng với hai giá trị đối nhau của x thì biểu thức A có hai giá trị đối nhau. Giúp em với ạ

Các bn vẽ cho mik anime vui Nhân tiện chúc mừng sinh nhật hoidap247 zui zẽ nha

vẽ giúp tớ 3 bé mầm đậu nha tức giận hay j j đó cũng dc vẽ tay hay app đều dc nhanh nhé đẹp sẽ vote 5*

Trên thế giới có những đại dương nảo ?

viết dạng đúng của từ trong ngoawcj 1) vietnam is a .......... country ( society) 2) the taecher had great ........... in his student ( confident) 3) we have a good ......... with our neighbors( relative) 4) he looked very ......... because the mesenger cam to invite him to the laboratory ( excite) 5) faraday spent his.... the country ( child)

Thêm từ viết câu: 1.They/ go/ back/ to England/ visit/ friends/ in two months 2.At home/ farm life/ farmers/ always/ have/ difficulty/ get/ much money 3.children/ keep/ talk/ another/ when/ teacher/ come/ in

hi các pác đây là acc phụ của táu acc chính ''baongoc140208'' bị khoá r.-. chả hỉu sao lí do:" gian lận đ ".-. thui các pác vẽ cho anime vui và bùn

1 I think I ___ a new computer this year. a will need b am needing c will have needed d have needed 2 ___ see that 3D film tonight? a You will b Are you going to c Have you d Will you have 3 Here’s an email from Jim. I ___ back later. a will write b am writing c will have written d write 4 Brian’s flight will have landed ___ we get to the airport. a until b by the time c the moment d as soon as 5 The new IT magazine is out. ___ you a copy? a Am I going to buy b Shall I buy c Am I buying d Will I have bought 6 It’ll be a long time before she ___ another useless gadget. a buys b will buy c will be buying d is going to buy 7 What ___ with this old keyboard? a shall we do b will we have done c we are going to do d did we do 8 I ___ the information by 2 o’clock. a download b am downloading c downloaded d will have downloaded 9 Please call Thomas ____ you get home. a until b the moment c as soon d by the time 10 I’m going shopping. ___ some paper for the printer? a Will I be getting b Will I have got c Am I going to get d Shall I get

Chọn đáp án thích hợp 1.New machines ______ used on this farm. A. have B. are being C. being D. were being 2. I wish it _____ my birthday everyday, but it isn't. A. had been B. were C. is D. had been 3. Winners of Olympics events are ______ with medals. A. prepares B. presented C. given D. taken