Un tren arranca de una estación y, poco a poco va ganando velocidad. Alvaro, Beatriz y Carlos han quedado fuera de momento de la salida y cada uno accede al tren de modo distinto. Alvaro corriendo, Carlos en motocicleta y Beatriz espera a que el tren pase por donde está.

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

Which one ? is the answer and how to find this answer