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7-18.

Factor the following expressions completely. Hint: Always look for common factors first.

  1. Start by factoring out a .
    Then factor the remaining quadratic.

  1. Start by factoring out the GCF.

  1. Factor out a . You will be left with a difference of squares.

Watch the following video if you need help with factoring quadratic expressions. Click the link at right for the full version of the video: Factoring Quadratics