SOLUTION: it asked to factor by grouping and i dont understand how to do it 8x^3+6x^2-12x-9

Question 82839: it asked to factor by grouping and i dont understand how to do it
8x^3+6x^2-12x-9
Answer by tutorcecilia(2152) (Show Source): You can put this solution on YOUR website!

[factor out the least common multiply amongst each factor and divide each term by it]
.
[this re-grouping doesn't work becasue each group has a different factor]
.
.
Try to re-arrange the terms, re-group and factor again:

[re-factor again; this factoring works because the groups now have a common factor (2x-3)]

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