anonymous
  • anonymous
Solve open parentheses square root of 6 close parentheses to the 8 x power = 216x−3.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1438190220162:dw|
anonymous
  • anonymous
I'm really confused
anonymous
  • anonymous
Oh! Okay I got -9 :)

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More answers

anonymous
  • anonymous
@phi
phi
  • phi
by first thought is 216 is probably a power of 6. is it ?
anonymous
  • anonymous
yes:) 6^3
phi
  • phi
and sqr(6) is 6^(1/2)
anonymous
  • anonymous
yes
welshfella
  • welshfella
(sqrt6)^8x = (6^!/2)^8x = 6^4x 216^(x - 3) = (6^3)^ (x - 3) = 6^ 3(x - 3)
anonymous
  • anonymous
so maybe 4x=3x-9 ??
welshfella
  • welshfella
6^4x = 6^(3(x-3) so 4x = 3(x - 3)
phi
  • phi
yes, it looks like -9
phi
  • phi
not maybe. definitely 4x= 3x-9
anonymous
  • anonymous
yay :)
welshfella
  • welshfella
yes x = -9
anonymous
  • anonymous
Can I ask one more?
welshfella
  • welshfella
ok
anonymous
  • anonymous
Solve 81^x = 27^x + 2.
anonymous
  • anonymous
|dw:1438190777607:dw|
anonymous
  • anonymous
I have no idea about this one
welshfella
  • welshfella
change them to powers of 3
welshfella
  • welshfella
81 = 3^4 and 27 = 3^3
anonymous
  • anonymous
so 3^4=81
anonymous
  • anonymous
3^3=27
anonymous
  • anonymous
yes.
welshfella
  • welshfella
yea and 27^(x + 2) = 3^(3(x+2)
anonymous
  • anonymous
x=6!
anonymous
  • anonymous
Was I right?
welshfella
  • welshfella
4x = 3x + 6 x = 6
welshfella
  • welshfella
yea
anonymous
  • anonymous
Wanna do one last one?
welshfella
  • welshfella
sorry just been called away
anonymous
  • anonymous
kk! Thanks anyways!

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