How would you solve an inequality like this? 5x^3-7x^2-x+4 0

Question

How would you solve an inequality like this? 5x^3-7x^2-x+4 > 0

loser66 · Answer

It have only 1 real root.

mathslover · Answer

How did you get to that @Loser66 ? Even, I'm keen to know that.

loser66 · Answer

https://www.desmos.com/calculator/kycjazyaoa

loser66 · Answer

hehehe, I use calculator and math tool to find it out.

anonymous · Answer

ok but how would you find your roots by factoring?

mathslover · Answer

lol Loser66! That was such an INNOVATING method! :D

loser66 · Answer

@mathslover  So, What are we supposed to do?? take out a paper and solve line by line?? hahaha.. I don't have time to do that. Moreover, that is the Asker's duty, right?

anonymous · Answer

THATS WHAT I AM DOING BUT ITS NOT WORKING

anonymous · Answer

I AM SITTING HERE WITH PAPERS EVERYWHERE

anonymous · Answer

ok nvm i got it

anonymous · Answer

thanks for your time friends

loser66 · Answer

@lolmathisfun  My calculator said that the root is -0.6715775663
So that there is no way to factor it out

mathslover · Answer

@Loser66 - I think you took my comment too seriously. You're surely right. Sorry if u felt wrong at any instant.

loser66 · Answer

nooooooooooo, I am cool enough to not let anything in my brain (or stupid enough to not get hurt from judgments) hehehe... I am brainless.

mathslover · Answer

Proud of you! You're just like me..! :D