Flabbergasted as to how to go about doing this... Would really appreciate some help. I've only ever been asked to do this with quadratic and cubic polynomials.

Edit: Oops, yeah, I want to solve for f(x) = 0. I'm trying to find the x-intercepts.

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- April 1st 2010, 09:15 PMliquidwaterHelp solving for x please... 2(x^2 -1)^(1/5)
Flabbergasted as to how to go about doing this... Would really appreciate some help. I've only ever been asked to do this with quadratic and cubic polynomials.

Edit: Oops, yeah, I want to solve for f(x) = 0. I'm trying to find the x-intercepts. - April 1st 2010, 09:25 PMSudharaka
- April 1st 2010, 09:25 PMProve It
- April 1st 2010, 09:25 PMSudharaka
- April 1st 2010, 09:47 PMliquidwater
- April 1st 2010, 09:57 PMProve It

.

So or .

Case 1:

.

Case 2:

. - April 1st 2010, 10:08 PMliquidwater
- April 1st 2010, 10:33 PMProve It
- April 1st 2010, 10:41 PMliquidwater
- April 2nd 2010, 01:38 AMHallsofIvy
You can, of course, take the fifth power here:

Divide both sides by 2:

Take the fifth power of both sides:

Add 1 to both sides:

So .

More generally, if ,

for a any number,