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When the expression pm2 + qm + 1 is divided by (m - 1), it has a remainder is 4, Find p ...

When the expression pm2 + qm + 1 is divided by (m - 1), it has a remainder is 4, Find p and q respectively
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  • A 2, -1
  • B -1, 2
  • C 3, -2
  • D -2, 3
Correct Answer: Option B
Explanation:
pm2 + qm + 1 = (m - 1) Q(x) + 2
p(1)2 + q(1) + 1 = 2
p + q + 1 = 2
p + q = 1.....(i)
pm2 + qm + 1 = (m - 1)Q(x) + 4
p(-1)2 + q(-1) + 1 = 4
p - q + 1 = 4
p - q = 3....(ii)
p + q = 1, p - q = -3
2p = -2, p = -1
-1 + q = 1
q = 2

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