emilywells0405 emilywells0405
  • 09-12-2020
  • Mathematics
contestada

3 times a number is 54 less than the square of that number

Respuesta :

kw237589 kw237589
  • 09-12-2020

Answer:

-6

Step-by-step explanation:

3n = n² - 54

n² - 3n - 54 = 0

n² - 9n + 6n - 54 = 0

n(n - 9) + 6(n - 9) = 0

(n - 9)(n + 6) = 0

n = 9 , -6

hope this helps

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meowmeow223334
meowmeow223334 meowmeow223334
  • 09-12-2020
3x = x^2 - 54
x^2 - 3x - 54 = 0
(x - 9)(x + 6) = 0
The answer is 9 or -6
Answer Link

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