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help_people

  • one year ago

Identify the factors of 6ab − 8a + 21b − 28. (2a + 4)(3b − 7) (2a − 4)(3b + 7) (2a + 7)(3b − 4) (2a − 7)(3b + 4)

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  1. anonymous
    • one year ago
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    do you want to work forward or backwards?

  2. welshfella
    • one year ago
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    factor by grouping

  3. help_people
    • one year ago
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    it does not matter and i beleive the asnwer is c but im not sure for htis one

  4. anonymous
    • one year ago
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    yep, you can mult out or factor by grouping like @welshfella suggested

  5. anonymous
    • one year ago
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    mult out ans c to get expression

  6. welshfella
    • one year ago
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    6ab − 8a + 21b − 28 = 2a(3b - 4) + 7(3b - 4)

  7. welshfella
    • one year ago
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    now take out the common factor 3b - 4

  8. help_people
    • one year ago
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    ok

  9. help_people
    • one year ago
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    what should i do nexT?

  10. welshfella
    • one year ago
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    well 3b-4 is one of the factors and the other is what is left outside the parentheses

  11. welshfella
    • one year ago
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    |dw:1441560579040:dw|

  12. welshfella
    • one year ago
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    = (2a +7)(3b - 4)

  13. welshfella
    • one year ago
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    there's an error in the drawing - it should be +7

  14. welshfella
    • one year ago
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    OK?

  15. help_people
    • one year ago
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    ok so c was roght ?!

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