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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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 · Answer 1 · 2017-09-22T15:01:53+02:00

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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