need help with square root of the fraction 2/5x

Kaelee

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Joined
Dec 3, 2006
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1
The problem is:

. . .square root of the fraction 2/5x

According to the book, the answer is square root of 50x over 5x. How did they get that?
 

mts

New member
Joined
Dec 1, 2006
Messages
11
Don't know.

Rationalise the denominator

sqrt(2)/sqrt(5x)

Multiply top and bottom by sqrt(5x)

(sqrt(5x)(sqrt(2))/(sqrt(5x)(sqrt(5x))

sqrt(10x)/(5x)
 

stapel

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Feb 4, 2004
Messages
15,943
Kaelee said:
square root of the fraction 2/5x
Do you mean any of the following?

. . . . .sqrt[2] / (5x)

. . . . .sqrt[2/5] x

. . . . .sqrt[2/(5x)]

Thank you.

Eliz.
 
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