Answer:
(2x + 1) • (x + 2)
Explanation:
Step 1 :
Equation at the end of step 1 :
(((15 • (x3)) - (2•5x2)) + 6x) - 4
Step 2 :
Equation at the end of step 2 :
(((3•5x3) - (2•5x2)) + 6x) - 4
Step 3 :
Checking for a perfect cube :
3.1 15x3-10x2+6x-4 is not a perfect cube
Trying to factor by pulling out :
3.2 Factoring: 15x3-10x2+6x-4
Thoughtfully split the expression at hand into groups, each group having two terms :
Group 1: 6x-4
Group 2: 15x3-10x2
Pull out from each group separately :
Group 1: (3x-2) • (2)
Group 2: (3x-2) • (5x2)
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Add up the two groups :
(3x-2) • (5x2+2)
Which is the desired factorization