a) The greatest value indicates the y-coordinate of the vertex. This is: 

b) For - 11 < x ≤ 6, the LEAST value when x = - 10 is: 

   For - 11 < x ≤ 6, the LEAST value when x = 6 is: 

Therefore, the LEAST value of , if x lies in the interval - 11 < x ≤ 6 is:  

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