SOLUTION: Use a product formula to compute and simplify {{{3(2x-1)(2x+1)-2x.}}}

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Question 156370: Use a product formula to compute and simplify 3%282x-1%29%282x%2B1%29-2x.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3%282x-1%29%282x%2B1%29-2x Start with the given expression


3%284x%5E2-1%29-2x FOIL %282x-1%29%282x%2B1%29 to get %282x-1%29%282x%2B1%29=4x%5E2%2B2x-2x-1=4x%5E2-1


12x%5E2-3-2x Distribute


12x%5E2-2x-3 Rearrange the terms.


So 3%282x-1%29%282x%2B1%29-2x simplifies to 12x%5E2-2x-3