hola,,, question... can I use the rational root test to proof that the cubic root of 2 and square root 3 are irrationals?

Question

anonymous · Answer

sure if you consider the polynomial 
$$x^3-2$$ the rational roots can only be 
$$\pm 1,\pm2$$ and by inspection neither of those work.

anonymous · Answer

cool.. yea i did that... thanks satellite

anonymous · Answer

yw

anonymous · Answer

i guess if you want a real proof you have to know that the root exists, but that is clear because this is a continuous function that takes on both positive and negative values

anonymous · Answer

waitt

anonymous · Answer

they are really asking me prove in detail

anonymous · Answer

what u mean the root exist?