SOLUTION: Suppose that the system of equations x^2 - y = a and y - x = b has exactly one solution for x, then what is this value for x?

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Question 1150728: Suppose that the system of equations x^2 - y = a and y - x = b has exactly one solution for x, then what is this value for x?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-%28x%2Bb%29=a
x%5E2-x-b=a
x%5E2-x-%28a%2Bb%29=0

If you want one solution only, expect that discriminant is 0.