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Cutiepo0 Group Title

How to evaluate (3^-3+3^-4)/3^-5

  • 3 years ago
  • 3 years ago

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  1. satellite73 Group Title
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    \[\frac{3^{-3}+3^{-4}}{3^{-5}}\]?

    • 3 years ago
  2. Cutiepo0 Group Title
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    yes

    • 3 years ago
  3. satellite73 Group Title
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    probably simplest to break it into two fractions \[\frac{3^{-3}}{3^{-5}}+\frac{3^{-4}}{x^{-5}}\]

    • 3 years ago
  4. polpak Group Title
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    Where x is 3.

    • 3 years ago
  5. Cutiepo0 Group Title
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    oh, okay let me try breaking it up

    • 3 years ago
  6. Cutiepo0 Group Title
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    So it's 12. Thanks!

    • 3 years ago
  7. satellite73 Group Title
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    when you divide if the bases are the same you subtract the exponents. be careful when you subtract, because you are subtracting a Negative number. \[\frac{3^{-3}}{3^{-5}}=3^{-3-(-5)}=3^{-3+5}=3^2\]

    • 3 years ago
  8. polpak Group Title
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    12 is correct. Yes.

    • 3 years ago
  9. satellite73 Group Title
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    yes it is 12. good work

    • 3 years ago
  10. satellite73 Group Title
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    hello polpak!

    • 3 years ago
  11. satellite73 Group Title
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    \[\color{green}{\text{hello polpak}}\]

    • 3 years ago
  12. polpak Group Title
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    Hello there.

    • 3 years ago
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