Answer
Discriminant for ax^2 + bx + c is b^2 – 4ac.
Thus, in our case,
Discriminant = 4^2 – 4*(1)(-n^2)
= 16 + 4n^2
Now, since n^2 is non-negative for any real n,
Thus, 16 + 4n^2 > 0 for all real values of n.
Hence, Discriminant > 0.
This means our quadratic equation above has two distinct roots. or you can say two distinct solutions.
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