He thinks English is interesting

He finds

My new classmate drove more carefully than us

We drove___________________

A. We drove less careful than my classmate.

B. We drove less carefully than my classmate did

C. We drove more carefully than my classmate did

D. We drove more careful than my classmate

ch hỗn hợp X gồm : 22g khí CO₂; 6,4 g khí SO₂  và 16 g khí O_{2. Tính phần trăm khối lượng từng chất trong X}

(64x³ + 1): 16x²-1=A: 4x-1

tìm A