If $x = 23$, find $x^{2} + 2x + 1$.

If $x = 23$, find $x^{2} + 2x + 1$.
  1. $576$
  2. $529$
  3. $552$
  4. $600$

Solution

$x^{2} + 2x + 1 = (x + 1)^{2} = 24^{2} = 576$.

Asked in: IMO

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