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root(42-6)(25+11)

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root(42-6)(25+11) [#permalink] New post 27 Dec 2016, 08:58
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Question Stats:

65% (00:20) correct 34% (00:44) wrong based on 23 sessions
\(\sqrt{(42-6)(25+11)}\)

(A) 6
(B) 18
(C) 36
(D) 120
(E) 1,296
[Reveal] Spoiler: OA

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Re: root(42-6)(25+11) [#permalink] New post 28 Dec 2016, 16:47
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Expert's post
Carcass wrote:
\(\sqrt{(42-6)(25+11)}\)

(A) 6
(B) 18
(C) 36
(D) 120
(E) 1,296


First off, √(42-6)(25+11) = √(36)(36)
Next, we'll use the property that √(xy) = (√x)(√y)
So, √(36)(36) = (√36)(√36)
= (6)(6)
= 36

Answer: C
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Re: root(42-6)(25+11) [#permalink] New post 01 Jan 2017, 22:48
36
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Re: root(42-6)(25+11) [#permalink] New post 21 May 2018, 06:42
under root 36*36 = 36 C
Re: root(42-6)(25+11)   [#permalink] 21 May 2018, 06:42
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