Question

factorise x^3-2x^2-7x+5​

Answer 1

Answer:

x3-2x2-7x+5

Final result :

x3 - 2x2 - 7x + 5

Step by step solution :

Step 1 :

Equation at the end of step 1 :

(((x3) - 2x2) - 7x) + 5

Step 2 :

Checking for a perfect cube :

2.1 x3-2x2-7x+5 is not a perfect cube

Trying to factor by pulling out :

2.2 Factoring: x3-2x2-7x+5

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

Group 1: -7x+5

Group 2: x3-2x2

Pull out from each group separately :

Group 1: (-7x+5) • (1) = (7x-5) • (-1)

Group 2: (x-2) • (x2)