when (-1)^2 and (1)^2 both is equal to 1 then why cant (1)^1/2 cant equal to both +1 and -1.. can someone explain
Hi acegmat29,
The GMAT limits square roots to the POSITIVE root only. You still have to pay careful attention to what the prompt presents though.
For example:
While (Root9) = +3
(RootX^2) = 4 means that X could be 4 or -4
GMAT assassins aren't born, they're made,
Rich
