Question

The roots of the cubic equation x3 + 6x2 - 9x + 4 = 0 are​

Answer 1

Answer:

Step-by-step explanation:

Equation at the end of step 1

 (((x3) -  (2•3x2)) +  9x) -  4  = 0  

STEP

2

:

Checking for a perfect cube

2.1    x3-6x2+9x-4  is not a perfect cube

Trying to factor by pulling out :

2.2      Factoring:  x3-6x2+9x-4  

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

Group 1:  9x-4  

Group 2:  -6x2+x3  

Pull out from each group separately :

Group 1:   (9x-4) • (1)

Group 2:   (x-6) • (x2)

Bad news !! Factoring by pulling out fails :

Answer 2

Answer:

refer to the attachment

hope this helps you...