Sqroot question

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mjjking: Master | Next Rank: 500 Posts; Posts: 353; Joined: Sat Jan 20, 2007 1:29 am; Location: Italy; Thanked: 7 times; GMAT Score:720

by mjjking » Sun Mar 22, 2009 1:55 am

Guys,
is sqroot(9+sqroot80) x sqroot(4+4throot23)

= sqroot [(9+sqroot80)x(4+4throot23)] ?

thanks!

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Source: Beat The GMAT — Problem Solving | Sun Mar 22, 2009 1:55 am

Vemuri: Legendary Member; Posts: 682; Joined: Fri Jan 16, 2009 2:40 amFollowed by: 1 member; Thanked: 32 times

Re: Sqroot question

by Vemuri » Sun Mar 22, 2009 2:37 am

Yes, they are equal.

sqrt(x) * sqrt(y) = sqrt(x*y)

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