Respuesta :

Answer:

x = 7

x = -7

Explanation:

x² = 49

  • [tex]\bold{\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}}[/tex]

[tex]\bold{x=\sqrt{49},\:x=-\sqrt{49}}[/tex]

√49 = 7

-√49 = -7

x = 7, x = -7

Answer:

[tex]\boxed{\boxed{\sf~x=7,-7}}[/tex]

Solution Steps:

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1.) Take the square root of both sides of the equation:

  • [tex]\sqrt{x}=x[/tex]
  • [tex]\sqrt{49}=7[/tex]

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