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Bananas1234

  • one year ago

Factor: x2 – 7x + 12

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  1. hockeychick23
    • one year ago
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    ok so you need to find 2 numbers that multiply to equal 12 and add to equal 7. Do you know what two numbers will give you that result?

  2. Bananas1234
    • one year ago
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    -4 x -3 = 12 and -4 + -3 + -7

  3. hockeychick23
    • one year ago
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    correct so you get (x-4)(x-3)

  4. Bananas1234
    • one year ago
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    X = 4 and X = 3?

  5. hockeychick23
    • one year ago
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    when you factor you don't solve for x but yes 3 and 4 are the two numbers you will use because x*x= x^2 x*-3= -3x -4*x= -4x -4*-3= 12 added together you get x^2-3x-4x+12 which simplified is x^2-7x+12 your factored equation will look like this: (x-4)(x-3)

  6. Bananas1234
    • one year ago
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    i see thank you!!!

  7. hockeychick23
    • one year ago
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    sure :)

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