Phương trình  có hai nghiệm trái dấu khi và chỉ khi

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose a word that has different stress pattern:

  industrial                approximately             enormously            population

• Choose a word that has different stress pattern:

  separated              contraception               annually              gradually

• Choose the word that has the underlined part pronounced differently from the rest:

  contained            attracted                succeeded              implemented

• Choose a word that has different stress pattern:

  fluctuate             unhealthy              industry              immigrant

• Choose a word that has different stress pattern:

  shortage            marriage               concrete              include

• Choose a word that has different stress pattern:

  envelope            pagoda           repentance           reunion

• Choose a word that has different stress pattern:

  gather            village              member              believe

• Choose a word that has different stress pattern:

  encouragement              resolution                preparation                entertainment

• Choose a word that has different stress pattern:

  computer                popular                  million              special

• Choose a word that has different stress pattern:

  allow               connect                invent               dial