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flyinglikeabird?

Correct me if I am wrong. Solve the quadratic equation m2+ 2m - 24 = 0 by factoring. Show all your steps.

  • one year ago
  • one year ago

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  1. flyinglikeabird?
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    We put this like m^2 + bm - c then we find what two numbers multiplied together = b and added together = c

    • one year ago
  2. flyinglikeabird?
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    So, -4 x 6 = -24 and -4 + 6 = 2

    • one year ago
  3. flyinglikeabird?
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    And I am not sure if there is anymore to the equation or not.

    • one year ago
  4. JakeV8
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    you are on the right track, just not quite done.

    • one year ago
  5. JakeV8
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    you found two factors that multiply to -24 and add to 2.... -4 and 6 So the factored form of m^2 + 2m - 24 = 0 looks like: (m - 4) (m + 6) = 0 Because... if you multiply those parenthesis out, you get m^2 -4m +6m - 24 = 0 and the -4m and +6m simplify back to +2m like in the original.

    • one year ago
  6. JakeV8
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    Now that you have the factored form as (m - 4) (m + 6) = 0 you need to solve for the m values that make this true. It will be true when the left side of the equation is = 0. That happens when EITHER parenthesis term is equal 0. So m = 4 will make the first term 0. And m = -6 will make the 2nd term 0. That means that m = 4 and m = -6 are solutions to your original equation. You have "solved the quadratic equation by factoring" :)

    • one year ago
  7. flyinglikeabird?
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    Ahhh, I see what you did there. Thank you sir! (:

    • one year ago
  8. JakeV8
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    The whole reason to find those factors that multiply to be the last number and add to be the coefficient of middle term is to set up that final factored form of the equation... then you can get the solution values for m. Glad to help! Good luck!

    • one year ago
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