andreascott
Simplify ;
( I will attach picture . )
3^ sqrt 9
9
81
sqrt 9



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andreascott
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Libniz
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what 9^2?

andreascott
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huh ?

Libniz
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9^2=81 right?

andreascott
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right . . .

Libniz
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so
\[81^{1/3}=((9)^2)^{1/3}\]

Libniz
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\[((9)^2)^{1/3}=9^{2/3}\]
going back to the problem and subbing that in
\[9^{1/3}* 9^{2/3}\]

Libniz
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when it is same base, you add the exponent
\[9^{1/2 + 2/3}=9^1=9\]

andreascott
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Thank you sooo much .