Solve for X

[spacewater]

problem $\displaystyle f(x) = 0$
$\displaystyle x^4 = 2x^3+1$

step
$\displaystyle f(x) = -x^4+2x^3+1$

this is where I got stuck, what is the next step to approach this problem?

 

[Loren]

problem $\displaystyle f(x) = 0$
$\displaystyle x^4 = 2x^3+1$

step
$\displaystyle f(x) = -x^4-2x^3+1$

this is where I got stuck, what is the next step to approach this problem?

If x[sup:8uwophpd]4[/sup:8uwophpd] = 2x[sup:8uwophpd]3[/sup:8uwophpd]+1 then x[sup:8uwophpd]4[/sup:8uwophpd] - 2x[sup:8uwophpd]3[/sup:8uwophpd] - 1 = 0

 

[spacewater]

problem $\displaystyle f(x) = 0$
$\displaystyle x^4 = 2x^3+1$

step
$\displaystyle f(x) = -x^4-2x^3+1$

this is where I got stuck, what is the next step to approach this problem?

If x[supxvvzsf0]4[/supxvvzsf0] = 2x[supxvvzsf0]3[/supxvvzsf0]+1 then x[supxvvzsf0]4[/supxvvzsf0] - 2x[supxvvzsf0]3[/supxvvzsf0] - 1 = 0

right, this is where I am stuck...

 

[Loren]

You haven't told us what you are trying to do. And you should note that what I wrote is different than your original statement.

 

[Deleted member 4993]

problem $\displaystyle f(x) = 0$
$\displaystyle x^4 = 2x^3+1$

step
$\displaystyle f(x) = -x^4+2x^3+1$

this is where I got stuck, what is the next step to approach this problem?

Please post the EXACT problem - as it was presented to you.

 

[spacewater]

SOrry for the confusion guys. I had to use the graphing Utility for this problem. :lol: