anonymous
  • anonymous
Simplify and write answer in exponential form: 3^3 + 2 • 3^3
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
\[3\times3\times3+2\times3\times3\times3\]
anonymous
  • anonymous
My professor's answer was 3 x 3^3 but idk how she got that
tkhunny
  • tkhunny
Factor this: A + 2A

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anonymous
  • anonymous
3A
tkhunny
  • tkhunny
Now try \((3^{3} + 2\cdot 3^{3})\) Hint: It is EXACTLY the same.
anonymous
  • anonymous
I'm sorry, but I still don't understand this.. :(
anonymous
  • anonymous
one apple and two apples are three apples one \(3^3\) and two \(3^3\) are three \(3^3\) and \(3\times 3^3=3^{1+3}=3^4\)
anonymous
  • anonymous
if your professor really wrote \[3\times 3^3\] he/she was not paying attention
ZeHanz
  • ZeHanz
Try to see it this way: you have: 3^3 + 2 • 3^3, so this is 1 • 3^3 + 2 • 3^3 = 3 • 3^3 (you have 3 times 3^3). Last step: 3 • 3^3 = 3 • 3•3•3 = 3^4 (=81, I fail to see why you would stop after writing it as 3^4, just calculate the outcome...)
anonymous
  • anonymous
Omg! Thank you! That helped :)
ZeHanz
  • ZeHanz
YW!

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