Factoring Part 2

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  • You have to get two numbers that multiply to 18 and subtract to give 3.
  • How do I factor x^2+3x-18?
  • I know that 6 times 3 is 18 and that 6 minus 3 is 3. What comes next?
  • You already know that x^2 is x times x. You fill in your parenthesis with a +6 and a -3.
  • So my answer would be (x+6)(x-3)?
  • Yes, and you can still check your answer using FOIL!
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