Question

Which of the following is a rational expression?

1) 2
2) 6/x-20
3) 20x^2+2/9x^3+x
4) All of them are rational expressions?

Answer 1

All of them

Explanation:

A rational expression is simply a quotient of two polynomials. Or in other words, it is a fraction whose numerator and denominator are polynomials.