What is the domain of #f(x)=x^2-4x+7 #? Algebra Expressions, Equations, and Functions Domain and Range of a Function 1 Answer Jacobi J. Apr 18, 2018 #x in RR# Explanation: #f(x)# is a polynomial, which means its domain is defined for all real numbers. We can input any value for #x# and get an #f(x)# value. Thus, #x in RR# meaning #x# is defined for all real numbers, or #x# is a member of the reals. Hope this helps! Answer link Related questions How do you determine if (-1, 4), (2, 8), (-1, 5) is a function? What is the domain for #f(x)=2x-4#? What is the domain and range for (3,1), (1,-4), and (2, 8)? What is the domain and range of a linear function? Is domain the independent or dependent variable? How do you find the domain and range of a function in interval notation? How do you find domain and range of a rational function? How do you find domain and range of a quadratic function? How do you determine the domain and range of a function? What is Domain and Range of a Function? See all questions in Domain and Range of a Function Impact of this question 1318 views around the world You can reuse this answer Creative Commons License