how do I find the zeros of x3 - 6x2 - 8x - 105
Ive tried synthetic division but nothing is coming out to zero

Question

anonymous · Answer

Cubic formula will do it. It's pretty long though

raden · Answer

http://www.wolframalpha.com/input/?i=+x%5E3+-+6x%5E2+-+8x+-+105+%3D+0

anonymous · Answer

im suposed to use synthetic division to get the the first zero then use the quadratic formula to find tthe rest but none of the possible rational roots come out to zero so I figured I messed up when i turned the lenth width and hieght into a polynomial.

raden · Answer

no integer numbers as the factors, it means this can not be factored and we can not use syntetic divsion to solve this

anonymous · Answer

okay so i guess I have start with a new length width and hieght?

raden · Answer

as the solution i mean

anonymous · Answer

ok thanks

raden · Answer

yw