Sq. Root of x^2

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euro: Master | Next Rank: 500 Posts; Posts: 120; Joined: Thu Sep 02, 2010 8:56 am; Location: India; Thanked: 7 times; GMAT Score:730

by euro » Mon Nov 01, 2010 9:09 am

If x is not equal to zero, then
[Sq.Root (x^2)]/ x =

(A) -1

(B) 0

(C) 1

(D) x

(E) |x|/x

OA is [spoiler](E)[/spoiler]

Not able to distinguish between choices [spoiler] (C) & (E) [/spoiler]. Both seem correct.

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Source: Beat The GMAT — Problem Solving | Mon Nov 01, 2010 9:09 am

kmittal82: Master | Next Rank: 500 Posts; Posts: 324; Joined: Mon Jul 05, 2010 6:44 amFollowed by: 3 members; Location: London; Thanked: 70 times

by kmittal82 » Mon Nov 01, 2010 9:13 am

Sq Root(x^2) = +x or -x

Thus, [Sq.Root (x^2)]/ x = +1 or -1

|x|/x matches this.

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