nomartinez2020 nomartinez2020
  • 28-11-2017
  • Mathematics
contestada

When the square of a certain number is diminished by 9 times the number the result is 36. Find the number.

Respuesta :

jordan107 jordan107
  • 28-11-2017
I think the number is 4
Answer Link
popalabdulqayou
popalabdulqayou popalabdulqayou
  • 28-11-2017
x^2-9x=36
x^2-9x-36=0
(x-12)(x+3)=0
x=12
x=-3
Answer Link

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