anonymous
  • anonymous
For what value(s) of x is √(– x)^2 = –| x |? A. x ≤ 0 B. x = 0 only C. x ≥ 0 D. no values of x
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
B.
radar
  • radar
Interesting...... my take is D.
radar
  • radar
But I am not sure. The right hand side -|x| will always be negative. The left hand side will be positive unless we are recognizing the negative root (which I am willing to do).

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More answers

myininaya
  • myininaya
\[\sqrt{-(0)^2}=-|0| \text{ is true}\]
myininaya
  • myininaya
I agree with B
anonymous
  • anonymous
Told you :)
radar
  • radar
Lets do a trial. Let x=-1, then \[\sqrt{(-(-1))^{2}}=-|-x|\]\[\pm1=-1\] I guess this is not totally true. Forget d
radar
  • radar
but I can't forget it entirely lol
myininaya
  • myininaya
radar is definitely works for x=0
myininaya
  • myininaya
it*
radar
  • radar
Yes b is for sure, I was trying to eliminate a c and d.
myininaya
  • myininaya
\[\sqrt{(-x)^2}=|-x| \]
radar
  • radar
I guess\[\pm0=-|0| \] is definitely true.
myininaya
  • myininaya
\[|-x|=-x \text{ if x<0} ; |-x|=x \text{ if x>0}\] hey hershey calm down just because you are confident in you answer doesn't mean everyone is
radar
  • radar
Thanks all, I am convinced B is correct.
myininaya
  • myininaya
good job though hershey
anonymous
  • anonymous
:)
radar
  • radar
The other distractors (a, c, and d) truly distracted me lol
myininaya
  • myininaya
Radar try writing them both as a piece wise function.
myininaya
  • myininaya
Ok, lol
radar
  • radar
Yes I see it, the double negative when a x<0 was substituted on the left was confusing me.
radar
  • radar
The fact that the total was being squared, then the square root was to be taken. The right hand side was straight forward for me. Thank goodness, I have passed the test taking phase of my life lol.
myininaya
  • myininaya
lol This is the way I looked at it \[\sqrt{(-x)^2}=|-x|=|-1||x|=1|x|=|x|\]
myininaya
  • myininaya
\[|x|=-|x| \text{ when x=0 only}\]
radar
  • radar
Yes that makes it most obvious to the casual observer (like me)
myininaya
  • myininaya
I was thinking about doing this a longer way, but this is the most easiest way
radar
  • radar
Yes that does simplify it.
anonymous
  • anonymous
if you wouldn't mind i posted another question i need help with

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