Question

Which of the following is a rational function?

F(x)=8x^2-21x+45
F(x)= 3 root of X +17
F(x)= 16x
F(x)= 5x/x^2-25

Answer 1

The last one. F(x)=5x/x^2 - 25, because the first term is a fraction with polynomial numerator and denominator.