Hi semwal,
This question can be solved using Number Properties or by TESTING a value:
Since x < 0, we know that it's negative. Under the square root sign, we have:
(-1 times a negative)(absolute value of a negative) this becomes:
(positive)(positive)
So, we're taking the square root of a positive number, which will give us a positive value.
Since x is negative, but we need a positive answer, we can eliminate B, D and E
A bit of playing around will prove that the answer is A
What if x = -2 or - 3 or -4 or -5, etc? By plugging in ANY of those values, what would you end up with for an answer?
If x = -2 then
Root[(-1 x -2)(absolute value of -2)] =
Root[ 2 )( 2 ) = Root (4) = + 2
Answer A matches when you plug x = -2 into the answer choices.
GMAT assassins aren't born, they're made,
Rich
