x<0 => -x > 0 & |x| > 0 => -x * |x| > 0 => Taking square root is possible.
The answer is either A or D (do not forget, √4 is -2 and 2). My intuition tells me that they are looking for positive answers, hence it is A (x<0 => -x>0)
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SQ RT
Source: Beat The GMAT — Problem Solving |
I'm sorry, but I have no idea how you arrived at your answer. This question seems very suspect...
x < 0, then √(-x│x│) is
First of all x <0 so it is -ve thru out....
one more rule to remember there is no value alled sqr root of a negative number...
|x| is + ve for any values
x=-ve
-(-x)*x=x^2
sqrt rt of x^2 = =/- x
but we know x <0 answer is -x
OA A
Vishu
First of all x <0 so it is -ve thru out....
one more rule to remember there is no value alled sqr root of a negative number...
|x| is + ve for any values
x=-ve
-(-x)*x=x^2
sqrt rt of x^2 = =/- x
but we know x <0 answer is -x
OA A
Vishu
KILL !! DIE !! or BEAT my FEAR !!! de@D END!!
