Perform the indicated operation and simplify.
- 
A. 11
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.At the two points where the curve x2 + 2xy + y2 = 4 crosses the x-axis, the tangents to the curve are parallel. What is the common slope of these tangents?
A. 0 B. -2 C. -1 D. 1
Mathematics
Use the graph to determine the x- and y-intercepts.
A. x-intercept: -2; y-intercepts: 2, 1, 5 B. x-intercept: -2; y-intercepts: -2, 1, -5 C. x-intercepts: 2, 1, 5; y-intercept: -2 D. x-intercepts: -2, 1, -5; y-intercept: -2
Mathematics
Simplify.-(3x - 9z + 5)
A. -3x + 9z - 5 B. -3x - 9z + 5 C. -3x + 9z + 5 D. -3x - 9z - 5
Mathematics
Add or subtract as indicated. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 
Mathematics