For the function y = x + 6 there are no such restrictions on the domain. When there are no restrictions, the domain of a

For the function y = x² + 6 there are no such restrictions on the domain. When there are no restrictions, the domain of a function consists of all real numbers because there are no exclusions. The inputs come from all values on the real number line which span from negative infinity to positive infinity. Enter the domain of the function y = x² + 6 using interval notation.