A quadratic equation has roots 3 and 4. What is the quadratic equation in standard form?

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A. x² - 7x + 12 = 0

B. x² + 7x + 12 = 0

C. x² - 12x + 7 = 0

D. x² + 12x - 7 = 0

E. None of the above

Answer: A. x² - 7x + 12 = 0

The quadratic equation can be formed using the roots: (x - 3)(x - 4) = 0, which expands to x² - 7x + 12 = 0.

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