Give all solutions of the nonlinear system of equations, including those with nonreal complex components.x2 + 3xy + y2 = 4 x2 - 3xy - y2 = 4
A. {(2, 0), (-2, 0)}
B. {(0, 2), (0, -2), (2, -6), (-2, 6)}
C. {(2, -6), (-2, 6)}
D. {(2, 0), (-2, 0), (2, -6), (-2, 6)}
Answer: D
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A. approximately 125 feet B. approximately 150 feet C. approximately 175 feet D. approximately 200 feet
Determine the values of x for which the function is differentiable.y = x2 - 16
A. All real numbers except 16 B. All real numbers except 4 C. All real numbers D. All real numbers except -4 and 4
Write the quotient in the form a + bi.
A. 
- 
i
B. 
+ 
i
C. 
+ 
i
D. 
- 
i
Find the absolute value of the complex number.2 + 10i
A. 104
B. 12
C. 2
D. 2