What is the discriminant of the quadratic equation 0 = –x2 + 4x – 2?

For a quadratic ax² + bx + c = 0, the discriminant is b² − 4ac. Here a = −1, b = 4, and c = −2, so the discriminant is 4² − 4(−1)(−2) = 16 − 8 = 8. Therefore, the correct choice is 8.

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