Use a sum or difference identity to find the exact value.tan(- 15°)
A. 
- 2
B. 
C. - 
+ 2
D. 
Answer: A
Mathematics
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Evaluate.
A. 5040 B. 0 C. 7 D. 1
Mathematics
Multiply.(4x - 11y)2
A. 16x2 - 88xy + 121y2 B. 4x2 + 121y2 C. 4x2 - 88xy + 121y2 D. 16x2 + 121y2
Mathematics
Use the Gauss-Jordan method to solve the system of equations. -4x - 2y = 6-16x - 8y = -1
A. 
B. (6, -1)
C. (4, 4)
D. No solution
Mathematics
Multiply.
Fill in the blank(s) with the appropriate word(s).
Mathematics