College Algebra CLEP Prep Practice Exam

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Prepare for the College Algebra CLEP Test with our comprehensive practice exam. Study with flashcards and multiple choice questions, each offering clues and detailed explanations. Achieve your best score and excel in your exam!

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What is the discriminant of the equation x2 - 6x + 9 = 0?

The correct answer is: -12

The discriminant of a quadratic equation in the form ax2 + bx + c = 0 is given by the expression b2 - 4ac. In this equation, a = 1, b = -6 and c = 9. Therefore, the discriminant is (-6)2 - 4(1)(9) = 36 - 36 = 0. This means that the equation has only 1 real root. The other options are incorrect because A and B values do not match the calculations for a discriminant, and C is the value of the discriminant for an equation with only 1 real root.