Tìm các cặp số nguyên (a,b) thỏa mãn \(a^2+ab+b^2=a^2b^2\)

Tìm x để biểu thức có nghĩa

\(\sqrt{x^2-3x+2}\)

Without this treatment, the patient have died.

=> If the patient hadn't________________

Minh was in habit of walking to school when he was a student

I usually walk to work but today I drove   (instead) 
  => I drove to work today .................................foot

The interview panel thought that Sarah had a very good manner   (Impression)
   => Sarha........................