user-avatar
thaiepro
2 năm trước
Bài 1: tìm x,y,z a. x ²+y ²+y ² = 2x+4y-6z-14 b.x ²+2 y ²-2xy+4y = -4 Giúp mình với ạ, giải chi tiết mình với nha . thăn kiu very much !
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

What ____________they (do)________________in the winter? Today, we (have)______________English class. Her favourite subject (be)__________________English. Now, my brother (like)_________________eating bananas. Look! A man (call)_________________you. Keep silent ! I (listen )____________________to the radio. ______________ you (play)_________________badminton now? Everyday, my father (get up)_______________at 5.00 a.m. Every morning, I (watch)_________________tv at 10.00. Everyday, I (go) __________to school by bike. Every morning, my father (have) ______________a cup of coffe. At the moment, I(read)_______________a book and my brother (watch)_______ TV. Hoa (live)________________in Hanoi, and Ha (live)________________in HCM City. Hung and his friend (play)_______________badminton at the present. They usually (get up)___________________at 6. oo in the morning. Ha never (go)___________fishing in the winter but she always (do)________ it in the summer. My teacher (tell)__________________Hoa about Math at the moment. There (be)____________________ animals in the circus. _______________he (watch)______________TV at 7.00 every morning?

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team