Solve the equation by completing the square.(x + 1)(x - 4) = 6
A. {5 ± 
}
B. {-2 ± 
}
C. {-5, 2}
D. {-2, 5}
Answer: D
Mathematics
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A. Does not exist B. 1 C. 2 D. - 2
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Write the complex number in the form a + bi.3 
A. 
+ 
i
B. 
+ 
i
C. 
+ 
i
D. 
+ 
i
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Rewrite the following as indicated.0.2 (Write as a percent.)
A. 0.02% B. 0.2% C. 20% D. 200%
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Solve the problem.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches, according to the equation 
What rainfall produces the maximum number of mosquitoes?
A. 10 in. B. 0 in. C. 20 in. D. 400 in.
Mathematics