Question 1033705
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This quadratic function has the coefficient 1 at {{{x^2}}}.
Hence, the parabola is open upward.


<U>Memorize it</U>:

   If the coefficient at {{{x^2}}} is a positive number, then 
   the quadratic function is a parabola open upward and has a minimum.


   If, in opposite, the coefficient at {{{x^2}}} is a negative number, then 
   the quadratic function is a parabola open downward and has a maximum.
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