If `P+Q=0`. Then which of the following is necessarily ture?

If P+Q=0 . Then which of the following is necessarily true?

Which of the following is ture ?

Which of the following is ture ?

Which of the following is ture ?

Which of the following is ture ?

If px^(3)+qx^(2)+rx+s is exactly divisible by x^(2)-1 , then which of the following is /are necessarily true ? (A) p = r )B) q = s (C ) p =- r (D) q =- s

Which of the following expression is ture?

Which of the following statements are ture?

Which of the following expression is ture?