moongazer
  • moongazer
How do you solve this ? the fastest way possible :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
moongazer
  • moongazer
38n^2 + 304n - 128 = -2n^2
moongazer
  • moongazer
Please help :)
Hero
  • Hero
1. Add 2n^2 to both sides first

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moongazer
  • moongazer
please continue :)
moongazer
  • moongazer
I got 40n^2 + 304n - 128 = 0
Hero
  • Hero
2. Factor out 8
moongazer
  • moongazer
8(5n^2 + 38n - 32)
Hero
  • Hero
You forgot the equal zero part
moongazer
  • moongazer
8(5n^2 + 38n - 32) = 0
Hero
  • Hero
3. Divide both sides by 8
moongazer
  • moongazer
w8 I think I got something wrong
Hero
  • Hero
32 x 8 = 256 That definitely isn't right
Hero
  • Hero
Did you figure out what you did wrong yet?
moongazer
  • moongazer
it should be 8(5n^2 + 38n - 16) right?
Hero
  • Hero
equal zero :/
Hero
  • Hero
You keep forgetting the equal zero
moongazer
  • moongazer
ok, I'll just try to solve it. I think I am getting confused because I divided 128 by 8 wrongly :) I'll just ask you if am I stuck with some part :)
moongazer
  • moongazer
8(5n-2)(n+8)=0 (5n-2)(n+8)=0 n=2/5 , n=-8 Is this correct?
moongazer
  • moongazer
Thanks! I believe it is correct :)
Hero
  • Hero
It's correct. Good job

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