Solve the equation in the complex number system.x2 + x + 2 = 0
A. {- 
- 
i, - 
+ 
i}
B. {
, 
}
C. {
, 
}
D. {
- 
i, 
+ 
i}
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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Find the general solution of the equation.u'(x) = 6u + 14
A. u = Cex/6 + 
B. u = Ce6x - 
C. u = Ce14x - 
D. u = Cex/6 - 84
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A. 
B. 
C. 
D. 
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