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January 31, 2015

Posted by **jane** on Thursday, April 21, 2011 at 9:37am.

2x^3 - x^2 - 162x + 81

and could you show steps as well? thanks

Thank you

- math -
**MathMate**, Thursday, April 21, 2011 at 1:11pmCheck for a pattern, as follows:

2x^3 - x^2 - 162x + 81

=x²(2x-1) -81(2x-1) (group terms)

=(2x-1)(x²-81) (factor groups)

=(2x-1)(x+9)(x-9) (diff.of 2 squares)

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