laetisha0510 laetisha0510
  • 02-05-2020
  • Mathematics
contestada

x2 + 18 = 67
whats the answer?

Respuesta :

pandaeyes1021
pandaeyes1021 pandaeyes1021
  • 02-05-2020

Answer:

7

Step-by-step explanation:

[tex]x^{2}[/tex] + 18 = 67

You first need to subtract 18 from both sides:

[tex]x^{2}[/tex] + 18 = 67

    - 18    -18

_________

[tex]x^{2}[/tex] = 49

To get rid of the square, you need to square root both sides:

[tex]x^{2}[/tex] = 49

[tex]\sqrt{x^2} = \sqrt{49}[/tex]

This leaves you with:

x = 7

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