factor:
2x^3 - x^2 - 162x + 81
and could you show steps as well? thanks
Thank you
Check 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)