The given function is:
[tex]k(x)=x^2+2x-3[/tex]
The given function is a polynomial function.
Therefore, the function f(x) is defined for all real values of x.
Therefore, the domain of the function is: (-∞, ∞)
Using the table, the minimum value of the function is -4.
Therefore, the range of the function is: [-4, ∞)
