X is a rational number, and the minimum value of (x + 1) ^ 2 + 3 is___ The maximum value of 3-x ^ 2 is___

X is a rational number, and the minimum value of (x + 1) ^ 2 + 3 is___ The maximum value of 3-x ^ 2 is___

∵ square greater than = 0
The minimum value of 3 is obtained when x = - 1
The maximum value of 3 is obtained when x = 0