SOLUTION: Factor Completely: 9x^9 -16x^7 + 9x^6 -16x^4

Question 119395: Factor Completely:
9x^9 -16x^7 + 9x^6 -16x^4
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression

Factor out the GCF

Now let's focus on the inner expression

Start with the inner expression

Group like terms

Factor out the GCF out of the first group. Factor out the GCF out of the second group

Since we have the common term , we can combine like terms

Now factor by using the sum of cubes to get and factor by using the difference of squares to get

Reintroduce the GCF

So factors to

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