-x|x| is positive and sqrt of a number is always positive (atleast foryvonne12 wrote:if x<0, then sqrt -X IxI is
why is it -x
I hate absolute values...
purposes of GMAT). Since x is negative, -x is positive and so
the answer is -x.
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jayhawk2001
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purposes of GMAT). Since x is negative, -x is positive and so
the answer is -x.
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Cybermusings
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Since x<0, x is to the left of 0 on the number line and hence it's absolute value or IxI will always be -x....
Sample this I -8 I = -(-8 ) = 8
I -17 I = -(-17) = 17
So IxI = -x
and -x * -x = x^2
sqr rt of the number = -x
Sample this I -8 I = -(-8 ) = 8
I -17 I = -(-17) = 17
So IxI = -x
and -x * -x = x^2
sqr rt of the number = -x
