SOLUTION: Hi. I need some help with the following problem. find all x that will make f(x)=0 f(x)=x^4-26x^2+25 thanks!

Algebra ->  Equations -> SOLUTION: Hi. I need some help with the following problem. find all x that will make f(x)=0 f(x)=x^4-26x^2+25 thanks!      Log On


   

Question 185111: Hi.
I need some help with the following problem.
find all x that will make f(x)=0
f(x)=x^4-26x^2+25
thanks!
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!

Let then:



So for f(u) = 0:



Which factors:



Hence, or

But so:



or



John