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What is -x-x


Ryaja

What is -x-x  

11 members have voted

  1. 1. -x-x=

    • -2x
      11
    • x^2
      0


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Just now, Deddly said:

Hang on... isn't the answer simply "x"? 

(as an answer to -x-x) 

No, because it is either negative x minus x which is negative two x or negative x times negative x which is x^2

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3 hours ago, Ryaja said:

No, because it is either negative x minus x which is negative two x or negative x times negative x which is x^2

except you would not write negative x times negative x that way.  That would be

-x(-x)

and before you say xx could be x^2 in the same way you write xy to mean x times y (x times x), and thus -x-x could also be x^2 - the conventions matter.  -x-y would never be understood as anything but negative x minus y.  AFAIK - you do need the parenthesis.

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