Question

factorise m³-9m²-m+105
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Answer 1

Answer:

(((m3) - 32m2) + 15m) + 25 = 0

STEP

2

:

Checking for a perfect cube

2.1 m3-9m2+15m+25 is not a perfect cube

Trying to factor by pulling out :

2.2 Factoring: m3-9m2+15m+25

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

Group 1: 15m+25

Group 2: -9m2+m3

Pull out from each group separately :

Group 1: (3m+5) • (5)

Group 2: (m-9) • (m2)

Bad news !! Factoring by pulling out fails :

The groups have no common factor and can not be added up to form a multiplication.

Step-by-step explanation:

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