What are the domain and range of the function f(x)= x4 – 2x2 - 4? domain: all real numbers
range: all real numbers greater than or equal to -5
domain: all real numbers
range: all real numbers greater than or equal to -4
domain: all real numbers between -2.5 and 2.5
range: all real numbers
domain: all real numbers between -2.5 and 2.5
range: all real numbers greater than or equal to -5