YourAverageFangirl
YourAverageFangirl YourAverageFangirl
  • 17-02-2021
  • Mathematics
contestada

What are the solutions of the equation (x−13)2=400?

x=±20
x=±7
x=±33
x=−7 and x=33

Respuesta :

unicorn3125
unicorn3125 unicorn3125
  • 21-02-2021

Answer:

       x = −7  and  x = 33

Step-by-step explanation:

[tex](x-13)^2=400\\\\ (x-13)^2=(\pm20)^2\\\\x-13=20\quad\vee\quad x-13=-20\\\\x=33\qquad\vee\qquad x=-7[/tex]

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