Question

How should I solve this equation?
http://prntscr.com/67z7uk
Thanks in advance!

Answer 1

Factor by grouping:
9x^3-18x^2-x+2
=9x^2(x-2) - (x-2)

The next step would be taking out the common factor (x-2), and further factor using the difference of two squares.

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For \(example\)
x^3+4x^2-4x-16=x^2(x+4)-4(x+4) = (x^2-4)(x+4) = (x+2)(x-2)(x+4)
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Answer 2

Thank you!

Answer 3

You're welcome! :)