Question

Solve the equation
X^3-2x^2-39x-72

Answer 1

Step-by-step explanation:

x3-2x2-39x-72

Final result :

(x + 3)2 • (x - 8)

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(((x3) - 2x2) - 39x) - 72

Step 2 :

Checking for a perfect cube :

2.1 x3-2x2-39x-72 is not a perfect cube

Trying to factor by pulling out :

2.2 Factoring: x3-2x2-39x-72

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

Group 1: -39x-72

Group 2: x3-2x2

Pull out from each group separately :

Group 1: (13x+24) • (-3)

Group 2: (x-2) • (x2)

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