SOLUTION: The square of a certain negative number is equal to five more than half of the number. Find the number.

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Question 1100808: The square of a certain negative number is equal to five more than half of the number. Find the number.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Number is x
(-x)^2=(1/2)x+5
x^2=(1/2)x+5
x^2-(1/2)x-5=0
2x^2-x-10=0
(2x-5)(x+2)=0
x=-2, negative number ANSWER
square it is 4, and that is 5 more than -1.