Chủ đề:
Bài 4: Phương trình tíchCâu hỏi:
a)X4 -x2 - 2=0
b) (x+1)4-(x2+2)2=0
1. Hoa / often / play / badminton/ afternoon. 2. Lan / usually/ read/ book / recess.
3. Ba/ seldom/ go/ school/ bus. 4. Her father/ ride/ his motorbike.
5. Lien’s mother/ teach/ Math/ our school. 6. Hoa and Lan/ be/ same class/ this year.
7. Nam/ have/ short black hair. 8. Lan/ introduce/ Hoa/ many new friends.
9. Tam/ often/ write/ letters/ her grand-parents. 10. They/ sometimes/ go fishing/ their friend