Help1234321
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Simplify 4^21

4^7
1. 4^28
2. 4^21
3. 4^7
4. 4^3



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Help1234321
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@gaby6

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@sue101

Help1234321
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@sunlab2015 @surdawi @MicroBot @MATHGEOMETRY8 @Hollywood_chrissy

SheldonEinstein
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Always remember that : \(\frac{a^b}{a^c} = a^{bc} \)

SheldonEinstein
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Hence, \[\large{\frac{4^{21}}{4^7} = 4^{217} = 4^{14}}\]

Help1234321
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Which operation would you use on the exponents to simplify the expression 57 × 511?
Addition
Subtraction
Multiplication
Division

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

Miyuru
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Addition.........

Help1234321
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Simplify 15^4

15^5

Help1234321
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@Miyuru

Help1234321
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@SheldonEinstein

Miyuru
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Do subtraction.. :)

Help1234321
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Simplify 15^4  15^5

Help1234321
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wouldnt it be 15^9??? not a answer

Help1234321
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its 15^4 and 15^5

Miyuru
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Do subtraction like this....\[\frac{15^4}{15^5}=15^{45}=15^{1}\]

Miyuru
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This answer is for the one you typed before..

gaby6
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Addition

radar
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\[15^{(45)}\]

Miyuru
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\[\frac{15^{4}}{15^5}=15^{45}=15^{9}\]