RodRod109 RodRod109
  • 11-03-2018
  • Mathematics
contestada

When the sum of 7 and three times a positive number is subtracted from the square of the​ number, 0 results. find the number?

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superaphmau86
superaphmau86 superaphmau86
  • 13-03-2018
The answer is...
x^2 - (7 + 2x) = 0
x^2 - 2x - 7 = 0
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