disregardthat

Science Advisor

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**1. Homework Statement**

(9^(3/x))^4

(without calculator)

**2. Homework Equations**

a^n/m = m'root'a^n

**3. The Attempt at a Solution**

adding the powers: 3/x*4/1 = 12/x

9^12/x

x'root'9^12 = ?

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Ok, it's supposed to be 27, but how can you know something that are being rooted from x?

The calculator says it's 2.655 when I use the

**x'root'9^12**(It's incorrect and I'm not allowed to do that)

How does it get that from x? And what is the correct way to find it?

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