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August 1, 2015

Homework Help: algebra

Posted by dez on Sunday, June 3, 2007 at 12:45pm.

3ax^2 - 27a

You can factor that into
3a (x^2 - 9), which also equals
3a(x-3)(x+3).

It is not clear from your question what you are supposed to do with that algebraic expression. If it were equal to zero, x would be +3 or -3.

If you are expected to factor, try factoring out 3a first: 3a(x^2 - 9)

You can also factor x^2 - 9. Can you determine those factors?

I hope this helps.

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