Solve the equation: x^3+2x^2-4x-8=0

fortdefruitI

fortdefruitI

Answered question

2021-08-18

Solve the equation:
x3+2x24x8=0

Answer & Explanation

gwibdaithq

gwibdaithq

Skilled2021-08-19Added 84 answers

x3+2x24x8=0
x3+2x24x8=(x3+2x2)(4x+8)
=x2(x+2)4(x+2)
=(x+2)(x24)
=(x+2)(x+2)(x2)
=(x+2)2(x2)
So, (x+2)2(x2)=0
1. x+2=0
x=-2
2. x-2=0
x=2
The answer:
x=-2. x=2.

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?