Question

Factor each
x^3 +2x^2 -4x -8 =0

Answer 1

Standard form:

x3 + 2x2 − 4x − 8 = 0

Factorization:

(x + 2)2(x − 2) = 0

Solutions based on Jenkins–Traub algorithm:

x1 = x2 = −2

x3 = 2

Extrema:

Max1 = (−2, 0)

Min1 = (0.666667, −9.481481)

Explanation: