help_people
  • help_people
Identify the factors of 6ab − 8a + 21b − 28. (2a + 4)(3b − 7) (2a − 4)(3b + 7) (2a + 7)(3b − 4) (2a − 7)(3b + 4)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
do you want to work forward or backwards?
welshfella
  • welshfella
factor by grouping
help_people
  • help_people
it does not matter and i beleive the asnwer is c but im not sure for htis one

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anonymous
  • anonymous
yep, you can mult out or factor by grouping like @welshfella suggested
anonymous
  • anonymous
mult out ans c to get expression
welshfella
  • welshfella
6ab − 8a + 21b − 28 = 2a(3b - 4) + 7(3b - 4)
welshfella
  • welshfella
now take out the common factor 3b - 4
help_people
  • help_people
ok
help_people
  • help_people
what should i do nexT?
welshfella
  • welshfella
well 3b-4 is one of the factors and the other is what is left outside the parentheses
welshfella
  • welshfella
|dw:1441560579040:dw|
welshfella
  • welshfella
= (2a +7)(3b - 4)
welshfella
  • welshfella
there's an error in the drawing - it should be +7
welshfella
  • welshfella
OK?
help_people
  • help_people
ok so c was roght ?!

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