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Interpret Nonreal Quadratic Solutions
Grade Level
Praxis Core
5165.052 Interpret Nonreal Quadratic Solutions
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Which pair correctly solves the completed-square equation 9(x – 5)
2
+ 20 = 0?
A
x = 5 + (2sqrt(5)/3)i and x = 5 - (2sqrt(5)/3)i
B
x = -5 + (2sqrt(5)/3)i and x = -5 - (2sqrt(5)/3)i
C
x = 5 + 2sqrt(5)i and x = 5 - 2sqrt(5)i
D
x = 5 + (4sqrt(5)/3)i and x = 5 - (4sqrt(5)/3)i
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