The domain of the function is the real number and the range of the function is (-∞, 6].
The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.
The function f(x) = -x² - 4x + 2
The function can be written as
[tex]\rm f(x) = -x^2- 4x +2\\\\f(x) = -x^{2}- 4x - 4 + 4 +2 \\\\f(x) = -(x^{2} +4x +4) + 6\\\\f(x) = -(x+ 2)^2 + 6[/tex]
The domain is the real number and the range is (-∞, 6].
More about the function link is given below.
https://brainly.com/question/5245372
