Tìm x,y thuộc z . Biết : a)2xy-x+y=7 b)2xy-x+y=1

Vẽ hộ anime với Ngoài lề: Cô đơn quá các pác ơi, ai để ảnh đôi khum. - Nói chung táu ko nổi tiếng, cùi bắp nên các pác đừng tẩy chay táu

tìm mọi số tự nhiên n sao cho n^2 + ( n + 1 ) ^2 + ( n + 2 ) ^2 + ( n + 3 ) ^2 chia hết cho 5

Câu 5: Choose the best answer to fill in the blank. Several famous people are left-handed, (1) ____ Julius Caesar, Napoleon, and Albert Einstein. Queen Victoria of England was also left-handed, (2) ____ Prince Charles. Paul Mc Cartney of the Beatles plays (3) ____ guitar the opposite way from other guitarists because he is left-handed. Marilyn Monroe, the famous American star was also a leftie. Are you a leftie (4) ____ you write with your right hand? To understand (5) ____ it is necessary to look at the brain. The brain is (6) ____ into two hemispheres. The left hemisphere of the brain (7) ____ the right side of the body, and the right hemisphere controls the left side. Both of the sides of the body receive the same information (8) ____ the brain because the two hemispheres are connected. (9) ____, in the right handed people, the left hemisphere is stronger. In the left-handed people, it is the right hemisphere (10) ____ is stronger. Câu 1 A. such as B. so as C. so that D. such that Câu 2 A. is so and B. and C. and so is D. and is so Câu 3 A. a B. an C. the D. no article Câu 4 A. as B. because C. even D. even though Câu 5 A. leftie B. lefthandedness C. left-handed D. lefthander Câu 6 A. divided B. cut C. subtracted D. separated Câu 7 A. conquers B. controls C. contrasts D. consists Câu 8 A. on B. to C. from D. for Câu 9 A. In order that B. Therefore C. Never D. However Câu 10 A. who B. whom C. that D. where

Giải phương trình tích a) (1-3x)^2-25x^2=0

Giúp tui với Tui chẳng bít làm Help đi Rồi cho 5 sao với ctlhn

Có thần đồng nào làm được câu b ko

chứng minh rằng: n^2 + n + 1 chia hết cho 9 với mọi n € N*

Quy tắc dấu ngoặc ? Quy tắc chuyến vế ?

8. I find this book ______. I can't stop reading it. A. interesting B. interested C. boring D. bored 9. They are living in a house that ______ in 1960. A. is built B. was built C. built D. was building 10. Lan: "I have just received a scholarship for studying abroad." A. That's a good idea B. You're welcome C. Congratulations D. Thank you