a) x.(x-y)+y(x-y) n-1 n-1 n-1 b)x (x+y)-y(x +y )

chứng minh hình thang có đường chéo bằng nhau là hình thang cân

Hãy kể về một kỉ niệm trong dịp hè vừa qua của em ( bằng 1 bài văn khoảng 1,5 trang giấy) Giúp mk với mk đang gấp

VẼ AVATA ĐEN TÂM TRẠNG BUỒN CÓ CHỮ BÊN TRONG TRANH CÀNG BUỒN CÀNG TỐT NHA

GIÚP MIK VS MIK SẮP PHẢI NỘP R. HỨA VOTE 5* , CTLHN VÀ CẢM ƠN . FIGHTING!!! C1: You ever (ride)_____ a buffalo ? C2: My grandfather says that farmers in the past (work)______ harder than farmers nowadays. C3: I am looking forward to (hear)_ from you soon . C4: After (take)_____ food from the plate, you should put it into your bowl before eating. C5: My home village (change)______ a lot nowadays. C6: He is surprised (know) ______ that there are 54 ethnic group in uor country. C7: In summer, we are very interested in (play)_____ beach games, especially voleyball.

Giải hộ em bài này với . Ai nhanh, đúng em sẽ vote 5* + ctlhn + cảm ơn

His painting will be exhibited for the first __ by New Arts gallery __ Mr. Lam goes to Paris next week, he will see the Eiffel Towel After running to fetch water , competitors have to come __ to their starting point Hung said __ he could repair the bicycle for me ___ happend to glass when it is sent to the factory ?

Change these sentences into reported speech: 1.''I can repair the computer'',he said to me -> 2.''Everything is expensive after Tet'',they said ->

Bài 3 : Tìm x, biết : a) 2.|x-1|= 8 b) |2-x| + $\frac{3}{4}$ = 6,75

BaS + H2SO4 → BaSO4 + H2S Ai viết giúp mình pt ion rút gọn của phản ứng này với