How to solve or factorize this equation?

help please

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- Mar 16th 2008, 07:49 AMzxeSolve x^4 - x^3 + 8x - 8 = 0, help pls
How to solve or factorize this equation?

help please - Mar 16th 2008, 07:55 AMMoo
Hello,

You can observe that the sum of the coefficients is 0. So 1 is solution. This means that you can factorise by (x-1).

So

Where Q(x) is a polynom of degree 3 -> Q(x)=ax^3 + bx² + cx + d, with a,b,c,d to determine by developping (x-1)Q(x). - Mar 16th 2008, 07:55 AMwingless

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- Mar 16th 2008, 09:09 AMJhevon
- Mar 16th 2008, 01:28 PMtopsquark