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  • 22-09-2017
  • Mathematics
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The sum of a number and 20 is no more than the sum of the square of the number and 9

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doinmybest
doinmybest doinmybest
  • 22-09-2017
x + 20 <= √x + 9
x <= √x - 11
This can't be true without using imaginary numbers...
Any number of x greater than 0 will result in a false statement
Any number of x less than 0 will result in an imaginary number because of √x
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