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Challenge - Radical Exponents (m06q20)

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Intern
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Joined: 24 May 2010
Posts: 46

Kudos [?]: 5 [0], given: 6

Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 01 Jun 2011, 07:25
toughmat wrote:
I get the following results.Image


^^ what you did so far is correct. Further to match with the given choices, split \(5^2*\sqrt{^2}\) as \((5^2)\sqrt{^2} = (25)\sqrt{^2}\), which is given in choices

Kudos [?]: 5 [0], given: 6

Intern
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Joined: 20 Apr 2011
Posts: 40

Kudos [?]: [0], given: 9

Location: United Kingdom
Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 10 Jun 2011, 04:18
(a^x)^m = (a^m)^x
(5^[square_root]2)^2 = (5^2)^[square_root]2 = 25^[square_root]2

Kudos [?]: [0], given: 9

Intern
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Posts: 40

Kudos [?]: [0], given: 9

Location: United Kingdom
Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 10 Jun 2011, 04:19
hi, i was struggling to write ' to the power ' in symbols.
can somebody guide me please.
thanks

Kudos [?]: [0], given: 9

Intern
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Joined: 20 Apr 2012
Posts: 1

Kudos [?]: 5 [0], given: 16

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Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 04 Jun 2012, 22:36
Answer : 25^sqrt{2}
(5^sqrt{2})^2 = 5^ sqrt{2} * 5^ sqrt{2}
= 5^ sqrt{2}
= 25^ sqrt{2}

Kudos [?]: 5 [0], given: 16

Senior Manager
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Joined: 15 Sep 2009
Posts: 263

Kudos [?]: 76 [0], given: 6

Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 05 Jun 2012, 04:16
B is the answer. Tricky one but remember that the exponents will multiply each other, giving you 5^(2root2).

Cheers.
_________________

+1 Kudos me - I'm half Irish, half Prussian.

Kudos [?]: 76 [0], given: 6

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Kudos [?]: [0], given: 3

Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 13 Sep 2012, 08:35
a^b^c is a^(b^c) and not a^bc.So ,root(2)^2=1.9946~2;5^2=25

Kudos [?]: [0], given: 3

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Kudos [?]: 128470 [0], given: 12177

Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 04 Jun 2013, 06:18

Kudos [?]: 128470 [0], given: 12177

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Kudos [?]: 6 [0], given: 2

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Re: Challenge - Radical Exponents (m06q20) [#permalink]

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New post 04 Jun 2013, 08:48
The answer is B. (5^sqrt{2})^2 = (5^2)^sqrt{2} = 25^sqrt{2} :)

Kudos [?]: 6 [0], given: 2

Re: Challenge - Radical Exponents (m06q20)   [#permalink] 04 Jun 2013, 08:48

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