Exponents simplification : GMAT Quantitative Section
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# Exponents simplification

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Joined: 07 Jan 2013
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07 Apr 2013, 07:28
Hi guys,

I was trying to beat the gmat and got some question really close to this one in PS section. I cant remember the alternatives, but all of them were simplification of this expression for ex. 1/11^3 + 1/12^3 or 1/sq 11^3 + 1/sq12^3. Is there something am i missing for sure. Thanks
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07 Apr 2013, 07:35
gepetow wrote:
Hi guys,

I was trying to beat the gmat and got some question really close to this one in PS section. I cant remember the alternatives, but all of them were simplification of this expression for ex. 1/11^3 + 1/12^3 or 1/sq 11^3 + 1/sq12^3. Is there something am i missing for sure. Thanks

$$[12\sqrt{11*12}+11\sqrt{11*12}]/11*12\sqrt{11*12}=$$
$$\sqrt{11*12}(11+12)/11*12\sqrt{11*12}=$$
$$\frac{12+11}{11*12}$$

Semplification example: $$\sqrt{11*12^3}=\sqrt{11*12*12^2}=12\sqrt{11*12}$$
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Re: Exponents simplification   [#permalink] 07 Apr 2013, 07:35
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