SOLUTION: Factor {{{8x^3+343}}} Factor {{{x^4-20x^2+64}}}

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Factor {{{8x^3+343}}} Factor {{{x^4-20x^2+64}}}      Log On


   

Question 313031: Factor 8x%5E3%2B343

Factor x%5E4-20x%5E2%2B64
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!




Is the sum of two cubes, just follow the pattern:




Let

Then



Factor the quadratic in , then substitute back and factor each of the factors. You will end up with 4 factors which is what we expected from a 4th degree polynomial.

John