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# If x≠0 and x=sq rt (4xy-4y2), then, in terms of y,

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Manager
Joined: 07 Jul 2003
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If xâ‰ 0 and x=sq rt (4xy-4y2), then, in terms of y,  [#permalink]  09 Feb 2004, 11:17
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100% (01:49) correct 0% (00:00) wrong based on 1 sessions
17. If x≠0 and x=sq rt (4xy-4y2), then, in terms of y,
(A) 2y
(B) y
(C) y/2
(D) -4y2/1-2y
(E) тАУ2y
Manager
Joined: 07 Jul 2003
Posts: 59
Followers: 2

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

Can you elobrate on that..I tried to square it too..But didnt get the desired results.

Thanks
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Attain Moksha

Director
Joined: 03 Jul 2003
Posts: 658
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Kudos [?]: 6 [0], given: 0

X^2 = 4XY - 4Y^2
X^2 - 4XY + 4Y^2 = 0
(X - 2Y)^2 = 0

or

X - 2Y = 0

X = 2Y

Hope, this helps!
Manager
Joined: 07 Jul 2003
Posts: 59
Followers: 2

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

Thanks, Dont believe I couldnt solve that one..

Thanks again...
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# If x≠0 and x=sq rt (4xy-4y2), then, in terms of y,

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