SOLUTION: The sum of an integer and the square of its additive inverse is 56. What is the number?

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Question 252206: The sum of an integer and the square of its additive inverse is 56. What is the number?
Answer by hokies(65) About Me  (Show Source):
You can put this solution on YOUR website!
x + (-x)^2 = 56
x^2 + x - 56 = 0
(x+8)*(x-7)=0
x = -8 or x = 7