Answer:
-12 , it has 0 real solution
Explanation:
Discriminant (Δ) = b^2 - 4ac
For the equation -x^2 + 2x - 4 = 0, we have:
a = -1
b = 2
c = -4
Now, calculate the discriminant:
Δ = (2)^2 - 4(-1)(-4)
Δ = 4 - 16
Δ = -12
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