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Preview questions
1. What is the standard form of a quadratic equation?
ax^2 + bx + c = 0 · ax^2 + bx = 0 · a(x - h)^2 + k = 0 · x^2 + bx + c = 0
2. What is the value of 'b' in the quadratic equation 2x^2 + 3x - 5 = 0?
2 · 3 · -5 · 0
3. Which of the following is a method to solve quadratic equations?
Graphing · Substitution · Elimination · Integration
4. The roots of the equation x^2 - 4 = 0 are:
2 and -2 · 0 and 4 · 1 and -1 · 4 and -4
5. What does the discriminant of a quadratic equation determine?
Nature of roots · Sum of roots · Product of roots · Vertex of parabola
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