txdi08
txdi08 txdi08
  • 17-04-2018
  • Mathematics
contestada

Please help, I can't remember any of this.

Please help I cant remember any of this class=

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Serpentiel
Serpentiel Serpentiel
  • 17-04-2018
The correct answer is the third one.

However, i would suggest you to remember the following simple rule:
[tex]a^{2}=b \newline a=\pm\sqrt{b}.[/tex]
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