If \( p x^{3}+q x^{2}+r x+s \) is exactly divisible by \( x^{2}- \)
(W)
1 , then which of the fo... VIDEO
If \( p x^{3}+q x^{2}+r x+s \) is exactly divisible by \( x^{2}- \)
(W)
1 , then which of the following is/are necessarily true?
(A) \( p=r \)
(B) \( q=s \)
(C) \( p=-r \)
(D) \( q=-s \)
(a) Both (A) and (B)
(b) Both (C) and (D)
(c) Both (A) and (D)
(d) Both (B) and (C)
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