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1988 AMC 12 Question 5

AMC12 · 1988 AMC 12

Question 5

If $b$ and $c$ are constants and $$
(x+2)(x+b)=x^2+cx+6,
$$ then $c$ is
  1. $-5$
  2. $-3$
  3. $-1$
  4. $3$
  5. $5$