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maria74123
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Wait its kinda hard to read....is 2/3 the exponent???

abb0t
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\[27^{\frac{ 2 }{ 3 }} = \frac{ 1 }{ \sqrt[3]{27^2} }\]

abb0t
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magic?
\[\sqrt{a}=a^\frac{ 1 }{ 2 }\] similarly: \[\sqrt[100]{a}= a^{100}\] and: \[a^{1} = \frac{ 1 }{ a^1 }= \frac{ 1 }{ a }\]

abb0t
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sorry, the second one should be: \[\sqrt[100]{a} = a^\frac{ 1 }{ 100 }\]

abb0t
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to be fully clear: \[\sqrt[x]{a^y} = a^\frac{ y }{ x }\]

Mertsj
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Just remember: the bottom number is the root, the top number is the power. So what is the third root of 27?

Mertsj
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Yes. The top number is the power which is 2 so what is 3 to the second power?

Mertsj
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And there is your answer.

Mertsj
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I can't see very well. Is there a negative sign in front of the 2/3?

Mertsj
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If there it, it is 1/9

AriPotta
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mmk. thanks :)

Mertsj
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0k. Then it is 1/9. yw

abb0t
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stepped out for a minute, sorry. but i see you got the answer. Good job.