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For the quadratic equation 2x² + 4x + k = 0 to have real roots, what must be the condition on k?

B. K ? 4
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What is the product of the roots of the quadratic equation 3x² - 12x + 9 = 0?

C. 1
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What is the sum of the roots of the quadratic equation x² - 5x + 6 = 0?

A. 5
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If one root of the quadratic equation x² - 7x + 10 = 0 is 2, what is the other root?

A. 5
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If the quadratic equation x² + 6x + 9 = 0 is represented graphically, what is the vertex of the parabola?

C. (-3, 3)
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