anonymous
  • anonymous
Expand using the distributive property: (will award and fan asap!)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
-3x (4d - 5e - 3f )
anonymous
  • anonymous
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
is that x a variable? or are you saying "multiply" ?

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anonymous
  • anonymous
a variable
anonymous
  • anonymous
the parenthesis imply multiplication
jim_thompson5910
  • jim_thompson5910
ok so what you do is multiply the outer -3x by each term inside
anonymous
  • anonymous
right, i did that. but I can't multiply because they're not like terms
anonymous
  • anonymous
right?
jim_thompson5910
  • jim_thompson5910
you'll have -3x times 4d = ?? -3x times -5e = ?? -3x times -3f = ??
jim_thompson5910
  • jim_thompson5910
you can multiply terms that aren't like terms
jim_thompson5910
  • jim_thompson5910
example 2x times 3y = 6xy
anonymous
  • anonymous
ohh
jim_thompson5910
  • jim_thompson5910
that rule you're thinking only applies to adding and subtracting
anonymous
  • anonymous
oh right.
anonymous
  • anonymous
Ok, so it would be -12xd
anonymous
  • anonymous
+ 15xe
anonymous
  • anonymous
+ 9xf ?
jim_thompson5910
  • jim_thompson5910
-3x times 4d = -12xd -3x times -5e = 15xe -3x times -3f = 9xf all three are correct
jim_thompson5910
  • jim_thompson5910
so, `-3x (4d - 5e - 3f )` is equivalent to `-12xd + 15xe + 9xf`
anonymous
  • anonymous
thanks!!
anonymous
  • anonymous
can you help with one more?
anonymous
  • anonymous
sorry I'm asking so many questions :P
anonymous
  • anonymous
I'll tag you

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