Chủ đề:

Violympic toán 7

Câu hỏi:

Giả sử các số nguyên dương x, y, z thỏa mãn điều kiện: x(căn 3 -1) = y.(2 căn 3 +1) - z. CMR: x+4y-z/x+y-1 là một phân số tối giản

Chủ đề:

Luyện tập tổng hợp

Câu hỏi:

Which of the following sentences is the correct one? * a, Emma and her kids are going to the supermarket. b, Emma and his kids are going to the supermarket. c, Emma and she's kids are going to the supermarket. Which of the following sentences is the correct one? * a, John has a much more bigger arrow than Henderson. b, John has a much bigger arrow than Henderson. c, John has a much biggerer arrow than Henderson. Which of the following sentences is the correct one? * a, I can hear they're steps. b, I can hear their steps. Which of the following sentences is the correct one? * a, You're supposed to be the new guy right? b, Your supposed to be the new guy right? Which of the following sentences is the correct one? * a, How did you manage to find the answer? b, How you did managed to find the answer? c, How did manage you find the answer?