Question

find the roots of x³-4x²-8x+8​

Answer 1

Step-by-step explanation:

x3-4x2-8x-8=0

One solution was found :

x ≓ 5.662354410

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(((x3) - 22x2) - 8x) - 8 = 0

Step 2 :

Checking for a perfect cube :

2.1 x3-4x2-8x-8 is not a perfect cube

Trying to factor by pulling out :

2.2 Factoring: x3-4x2-8x-8

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1: x3-8

Group 2: -8x-4x2

Pull out from each group separately :

Group 1: (x3-8) • (1)

Group 2: (x+2) • (-4x)

Answer 2

your math answer is x2-4x3