SOLUTION: when a positive number is added to its square,the sum is 240.find the number
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Question 712158: when a positive number is added to its square,the sum is 240.find the number
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let the positive number =
It's square is
given:
Subtract from both sides
Note that , so
The solutions are:
and
The number has to be positive, so
check:
OK
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