Find the domain of the function Write the answer in interval

Find the domain of the function

Write the answer in interval notation.

Find the domain of the function f(x) = (x + 18) (x - 4) Write the answer in interval notation.

Solution

f(x) = (x+18)(x-4)

Domain of the function is R ie. all the real numbers can be given as input to this function f(x)

ie. domain: (-, )