Solving Complex Equations Review

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What are the zeros of the function f(x) = x² + 64?

• -8 and 8

• -8i and 8i

• (-√8) i and (√8) i

• -√8  and √8

• -4, 2
• -2, 4
• -16
• -4

Select the best answer. 

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• B

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• 2 real and rational solutions

• 2 real and irrational solutions

• 1 real and rational solution

• 2 complex solutions

• Factoring

• Taking Square Roots

• Completing the Square

• Quadratic Formula

If the value of the discriminant is -20, what type of solutions would that represent for the quadratic equation?

• two real solutions

• two imaginary (complex) solutions

• a double root (the same real solution twice)

• one real solution