shaniakragt shaniakragt
  • 09-12-2018
  • Mathematics
contestada

If 2 is added to the square of an integer, the result is 7 less than 10 times that integer. Find the integer(s). (Enter your answers as a comma-separated list. Simplify your answer completely.)

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Altherra Altherra
  • 09-12-2018
let the integer be x.

[tex]x^{2} + 2 = 10x - 7[/tex]
[tex]x^{2} - 10x + 9 = 0[/tex]
Solve quadratic equation:
x=9 or x=1
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