Anguyennn
  • Anguyennn
How to find the greatest common factor of x(a+2)-2(a+2)?
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
What do \(x(a+2)\) and \(-2(a+2)\) have in common?
Anguyennn
  • Anguyennn
a and 2
anonymous
  • anonymous
yeah, but you need to keep the plus sign in the middle. (a + 2) would be the gcf

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Anguyennn
  • Anguyennn
and then would x-2 go together?
anonymous
  • anonymous
right
Anguyennn
  • Anguyennn
could you also help me with 1/3x^4+2/3x^3-4/3x^2+1/3x?
anonymous
  • anonymous
that's confusing as written. could you draw it out?
Anguyennn
  • Anguyennn
yep
Anguyennn
  • Anguyennn
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Anguyennn
  • Anguyennn
finding the gcf
anonymous
  • anonymous
There's a denominator of 3 and an x in each term, so the gcf would be \[\frac{ 1 }{ 3 }x\]
Anguyennn
  • Anguyennn
why does there have to be a numerator?
anonymous
  • anonymous
because all fractions must have a numerator and denominator
anonymous
  • anonymous
alternatively, you could say,\[\frac{ x }{ 3 }\]

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