6.tim gia tri nho nhat cua bieu thuc.

D=2x^2-6x

5. Her English is better than his English

- His English isn’t 

6. She doesn’t have an electric bike.

- She wishes

7. My brother didn’t pass the exam last week

-  If only

8.  The children are eating some biscuits now. 

- Some biscuits

9. How about playing basketball this afternoon?

Cho tam giac ABC vuonA , co AH la duog tai ng cao (H thuoc BC) va AM la tia phan giac cua goc HAC (M thuoc BC) . Ke MK vuong goc voi AC tai K . a,Chung minh rang AH = AK,BA = BM. b,Goi I la giao diem cua duong thang MK va duong thang AH . Chung minh rang AM vuong goc CI va KH song song C

Sai cau cuoi hay sao ay