(adsbygoogle = window.adsbygoogle || []).push({}); absolute value help .....

i am a bit confused about two things...

first: is sqrt(x^2) is the same thing as |x|? if yes then consider a negative no. 'z' .... i had a question like this: sqrt(z^2)...its answer was -z....so i suppose this means that this square root/ square and absolute value thing is the same and since z is negative so we say that answer is -z which will obviously be positive.

second: its related to the first one.

consider sqrt[-3]*sqrt[-3]

is this even computable in the real plane? i am asking this because the calculator was given a mth error....on the other hand alphawolfram resource was giving -3

i am with the resource on this because if my first question is correct then it is the same thing that is sqrt(-3)^2

so clarify all this

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# Homework Help: Absolute value help .

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