anonymous
  • anonymous
factor 3a^2-27a-210
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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OakTree
  • OakTree
Hi! Do you just want the answer, or do you want me to help you go through it and explain?
anonymous
  • anonymous
well i factored out the 3 to begin with and 3(a^2-9a-70) but I can't figure out what's next.
OakTree
  • OakTree
Okay. So since it's -70 we want to find factors of 70 that have a difference of 9. Does that make sense now?

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OakTree
  • OakTree
@lgh875? Do you get it?
anonymous
  • anonymous
Yes and I can't figure out what two multiply to get -70 and add to get -9.
OakTree
  • OakTree
Not add. Subtract.
anonymous
  • anonymous
even subtract. I have 1,70-2,35-5,12-7,10. That's all the factors of 70 i see.
OakTree
  • OakTree
Not 5 and 12. That makes 60.
anonymous
  • anonymous
ok, now i see! I keep making these stupid little mistakes that are going to cost me!! Thank you for your help! 3(a+5)(a-14)
OakTree
  • OakTree
No problem! Glad to help. And don't be down on yourself for those things - it happens to everyone.
anonymous
  • anonymous
Thanks again! I'm sure I will be back on here!
OakTree
  • OakTree
We'll be glad to see you back.

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