A quadratic equation has roots 4 and -1. What is the equation in standard form?

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A. x^2 - 3x - 4 = 0

B. x^2 + 3x - 4 = 0

C. x^2 - 3x + 4 = 0

D. x^2 - 3x + 4 = 0

E. None of the above

Answer: A. x^2 - 3x - 4 = 0

The standard form can be derived from the roots using the factored form (x - 4)(x + 1) = 0, which expands to x^2 - 3x - 4 = 0.

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