Tìm các số nguyên dương thỏa mãn: `3x^2 - 18y^2 + 2z^2 + 3y^2z^2 - 18x = 27`

Các câu hỏi liên quan

. Supply suitable tense of the verb in the brackets then turn into interrogative and negative. 1. My father (jog)_________________________________________ now ____________________________________________________________________ ____________________________________________________________________ 2. We (visit)_________________________ Huong Pagoda at the moment. ____________________________________________________________________ ____________________________________________________________________ 3. She (be) __________________________________________ at school. ____________________________________________________________________ ____________________________________________________________________ 4. Hoa (go)_____________________________________ swimming now. ____________________________________________________________________ ____________________________________________________________________ 5. Listen! The birds (sing) ____________________________ beautifully. ____________________________________________________________________ ____________________________________________________________________ 6. Phong (watch)_____________________________ television at present. ____________________________________________________________________ ____________________________________________________________________ 7. They (go)________________________________ to the movie tonight. ____________________________________________________________________ ____________________________________________________________________ 8. We (meet) ________________________________ our friends tonight. ____________________________________________________________________ ____________________________________________________________________ 9. Our friends (watch) __________ a game on TV at the moment. ____________________________________________________________________ ____________________________________________________________________ 10. My mother __________________________ (listen) to music at present. ____________________________________________________________________ ____________________________________________________________________ 11. Mai (play) ___________________________________ badminton now. ____________________________________________________________________ ____________________________________________________________________ 12. Lan (make)__________________________________ a dress for herself now. ____________________________________________________________________ Hơi dài mọi người cứu em với