SOLUTION: x^6-7x^3-8 In need to factor completely and find all the zeros Can I seperate the-8 from the rest and factor out x^3 to get x^3(x^3-7)= 8 or should i be using synthetic division

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: x^6-7x^3-8 In need to factor completely and find all the zeros Can I seperate the-8 from the rest and factor out x^3 to get x^3(x^3-7)= 8 or should i be using synthetic division      Log On


   

Question 369636: x^6-7x^3-8 In need to factor completely and find all the zeros
Can I seperate the-8 from the rest and factor out x^3 to get x^3(x^3-7)= 8
or should i be using synthetic division?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Your best bet is use a substitution and the quadratic formula.
Let u=x%5E3, then u%5E2=x%5E6, then solve
u%5E2-7u-8=0
Once you find u substitute back to x.