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Which is equal to 25 + 25?

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Math Expert
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Which is equal to 25 + 25?  [#permalink]

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New post 21 Apr 2017, 00:08
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

83% (00:15) correct 17% (00:09) wrong based on 105 sessions

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Re: Which is equal to 25 + 25?  [#permalink]

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New post 21 Apr 2017, 00:50
The answer is B.
√50= 2*5^2=5√2
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Re: Which is equal to 25 + 25?  [#permalink]

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New post 21 Apr 2017, 06:34
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Bunuel wrote:
Which is equal to \(\sqrt{25 + 25}\)?

A. \(2\sqrt{5}\)

B. \(5\sqrt{2}\)

C. 10

D. 25

E. 50


Apply the rule: √(xy) = (√x)(√y)


So, (50) = √[(25)(2)]
= (√25)(√2)
= 5√2

Answer:

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Re: Which is equal to 25 + 25?  [#permalink]

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New post 21 Apr 2017, 08:40
B.

25 + 25 = 2* 25.

root of (2*25) = 5 root 2.
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Re: Which is equal to 25 + 25?  [#permalink]

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New post 21 Apr 2017, 11:48
√25 + 25
√25 x 2
5√2

Answer is B
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Re: Which is equal to 25 + 25?  [#permalink]

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New post 25 Apr 2017, 09:16
Bunuel wrote:
Which is equal to \(\sqrt{25 + 25}\)?

A. \(2\sqrt{5}\)

B. \(5\sqrt{2}\)

C. 10

D. 25

E. 50


Let’s simplify the given expression:

√(25 + 25) = √50 = (√25)(√2) = 5√2

Answer: B
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Re: Which is equal to 25 + 25?  [#permalink]

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New post 25 Apr 2017, 10:15
\sqrt{25+25}=\sqrt{50}

= \sqrt{25x2}

= \sqrt{25}x\sqrt{2}
=5\sqrt{2}
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Re: Which is equal to 25 + 25? &nbs [#permalink] 25 Apr 2017, 10:15
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