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## Barrelracing one year ago Help please :) Simplify 27^-2/3 a) 9 b) 1/9 c) -1/9 d) -9

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1. anonymous

The "-" means you should invert. --- The "3" means you should take the cube root --- The "2" means you shour square. ---- These operations can be done in any order. --- Taking the cube root first you get: 3^-2 --- Inverting you get: (1/3)^2 --- Squaring you get: 1/9

2. anonymous

remember, $x^{-\#} \rightarrow \frac{1}{x^{\#}}$

3. midhun.madhu1987

|dw:1437583779539:dw| This is another method for your reference...

4. Barrelracing

thank yall soo much this really helps

5. anonymous

yw :)

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