Solve the equation by the method of your choice. Simplify solutions, if possible.x2 + 12x + 14 = 0
A. {6 ± 
}
B. {-12 ± 
}
C. {-6 ± 
}
D. {6 ± 
}
Answer: C
Mathematics
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Evaluate the integral.Use the formula
to evaluate the integral. 
A. x cos-1 x - sin x + C B. x cos-1 x - sin(cos-1 x) + C C. x cos-1 x + sin(cos-1 x) + C D. x cos-1 x - x + C
Mathematics
Find all the second order partial derivatives of the given function.f(x, y) = xy2 + yex2 + 5
A. 
= 2yex2; 
= 2x; 
= 
= 2xex2
B. 
= 2yex2; 
= 2x; 
= 
= 2y + 2xex2
C. 
= 2yex2(1 + 2x2); 
= 2x; 
= 
= 2y + 2xex2
D. 
= yex2(1 + 2x2); 
= x; 
= 
= y + xex2
Mathematics
Evaluate the expression without using a calculator.644/3
A. 16,384 B. 1024 C. 256 D. 4096
Mathematics
Graph the ellipse.9x2 + y2 = 144
A. 
B. 
Mathematics