SOLUTION: factor completely
3b^2-54b+243=?
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Question 426809: factor completely
3b^2-54b+243=?
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
When factoring, always start with the Greatest Common Factor (GCF). The GCF here is 3:
Next look to the other methods of factoring:- Patterns
- Trinomials
- Factoring by grouping
- Factoring by trial and error of the rational roots
Since - is clearly a perfect square
- 81 is also a perfect square,
- the middle term is equal to 2*b*9
fits the pattern. Using this pattern to factor it we get:
No further factoring can be done so we are finished.
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