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Home > INT3 > Chapter 9 > Lesson 9.2.3 > Problem 9-128

9-128.

Carmel picks an integer from 1 to 12 as a value for c in the equation y = x2 + 4x + c. What is the probability that his equation will have complex roots? Homework Help ✎

If b2 − 4ac < 0 then the equation will have complex roots.