SOLUTION: for this problem i have to factor completely.. x^3-8
Algebra
->
Polynomials-and-rational-expressions
-> SOLUTION: for this problem i have to factor completely.. x^3-8
Log On
Algebra: Polynomials, rational expressions and equations
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Polynomials-and-rational-expressions
Question 654865
:
for this problem i have to factor completely..
x^3-8
Found 2 solutions by
lynnlo, DrBeeee
:
Answer by
lynnlo(4176)
(
Show Source
):
You can
put this solution on YOUR website!
(x-2)(x^2+2x+4)
Answer by
DrBeeee(684)
(
Show Source
):
You can
put this solution on YOUR website!
Since x = 2 is a root (makes x^3-8 = 0), we can divide x^3-8 by (x-2) to get (x^2 + 2*x + 4). The quadratic can be factored, but the roots are complex.
x = {-1 +i[sqrt(3)], -1 - i[sqrt(3)]}