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  • 18-05-2022
  • Mathematics
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Find the value of "x" in x² -2 = 47

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loneguy
loneguy loneguy
  • 18-05-2022

[tex]~~~~~x^2 -2 = 47\\\\\implies x^2 = 47 +2 \\\\\implies x^2 = 49\\\\\implies x = \pm\sqrt{49}\\\\\implies x = \pm 7\\\\\text{Hence, }~ x = 7,~~ x = -7[/tex]

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