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Help1234321

  • 3 years ago

HELP!!!!!!!!!!!!!!! Simplify 4^21 ---- 4^7 1. 4^28 2. 4^21 3. 4^7 4. 4^3

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  1. Help1234321
    • 3 years ago
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    @gaby6

  2. Help1234321
    • 3 years ago
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    @sue101

  3. Help1234321
    • 3 years ago
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    @sunlab2015 @surdawi @MicroBot @MATHGEOMETRY8 @Hollywood_chrissy

  4. SheldonEinstein
    • 3 years ago
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    Always remember that : \(\frac{a^b}{a^c} = a^{b-c} \)

  5. SheldonEinstein
    • 3 years ago
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    Hence, \[\large{\frac{4^{21}}{4^7} = 4^{21-7} = 4^{14}}\]

  6. Help1234321
    • 3 years ago
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    Which operation would you use on the exponents to simplify the expression 57 × 511? Addition Subtraction Multiplication Division

  7. Help1234321
    • 3 years ago
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    Which operation would you use on the exponents to simplify the expression 5^7 × 5^11? Addition Subtraction Multiplication Division

  8. Miyuru
    • 3 years ago
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    Addition.........

  9. Help1234321
    • 3 years ago
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    Simplify 15^4 ---- 15^5

  10. Help1234321
    • 3 years ago
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    @Miyuru

  11. Help1234321
    • 3 years ago
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    @SheldonEinstein

  12. Miyuru
    • 3 years ago
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    Do subtraction.. :)

  13. Help1234321
    • 3 years ago
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    Simplify 15^4 ---- 15^5

  14. Help1234321
    • 3 years ago
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    wouldnt it be 15^-9??? not a answer

  15. Help1234321
    • 3 years ago
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    its 15^-4 and 15^5

  16. Miyuru
    • 3 years ago
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    Do subtraction like this....\[\frac{15^4}{15^5}=15^{4-5}=15^{-1}\]

  17. Miyuru
    • 3 years ago
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    This answer is for the one you typed before..

  18. gaby6
    • 3 years ago
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    Addition

  19. radar
    • 3 years ago
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    \[15^{(4-5)}\]

  20. Miyuru
    • 3 years ago
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    \[\frac{15^{-4}}{15^5}=15^{-4-5}=15^{-9}\]

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