For the function f(x)=x2-4, fins the value of f(x) when x=6

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.