Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.x2 - 4x - 7 = 0

A. Two different imaginary-number solutions
B. Two different real-number solutions
C. One real solution


Answer: B

Mathematics

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A.
B.
C. 2a
D. 2?a

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A. 55.4° B. 50.5° C. 42.1° D. 39.5°

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A. , - 
B.
C.
D.

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A. -2 ± 
B. -1 ± 
C. -2 ± 1
D. 2 + 

Mathematics