anonymous
  • anonymous
I'll FAN & MEDAL!!! Factor the expression 8x^3y − 8x^2y − 30xy.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Do you have a basic idea as to what to do?
anonymous
  • anonymous
no
anonymous
  • anonymous
Ok.. let's start off w/ the basics: You need to simplify this crazy expression by factoring out the GCF of this expression.

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anonymous
  • anonymous
Do you know what "GCF" stands for?
anonymous
  • anonymous
greatest common factor
anonymous
  • anonymous
Correct ! So, what do you think would be the GCF of this expression?
anonymous
  • anonymous
2xy
anonymous
  • anonymous
Correct.. wow you know how to do this!! Do you know how to factor "2xy" w/ this expression? Or is there where you get stumped?
anonymous
  • anonymous
yeah i got lost right there
anonymous
  • anonymous
|dw:1436457892829:dw| This is how you factor it out.. basically dividing polynomials.
anonymous
  • anonymous
Is it clear?
anonymous
  • anonymous
no not really
anonymous
  • anonymous
From where? Ask me where you don't get it. :)
anonymous
  • anonymous
We need to factor OUT the GCF from the expression. By dividing.
anonymous
  • anonymous
I don't get why we are dividing. Like if it was x^2-x+25 Then it would be (x-5)(x+5)
anonymous
  • anonymous
Like im not used to dividing when factoring expressions
anonymous
  • anonymous
That is a trinomial... that's different :)
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
Wait, no. After factoring out the GCF, it doesn't go away.. you'll see what I'll do... before putting it into that final parenthesis, you need to factor out any GCF's you see
anonymous
  • anonymous
|dw:1436458437754:dw|
anonymous
  • anonymous
Do you see what I did there?
anonymous
  • anonymous
NOW I will be applying the factoring by trinomials method.
anonymous
  • anonymous
The "2xy(" off to the side will remain there.
anonymous
  • anonymous
so it would be 2xy(2x-3)(2x+5)
anonymous
  • anonymous
Correct!
anonymous
  • anonymous
Congrats :)
anonymous
  • anonymous
Thank you soo much! :)
anonymous
  • anonymous
Np! I love factoring haha

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