Final answer:
The value of the expression b² - 4ac when a = -3, b = 2, and c = -1 is -8.
Step-by-step explanation:
To evaluate the expression b² - 4ac when a = -3, b = 2, and c = -1, we substitute the values into the expression.
Substituting the values, we get (2)² - 4(-3)(-1).
Simplifying the expression, we have 4 - 12, which equals -8.
Therefore, the value of the expression b² - 4ac is -8.