Simplify.5 ? (5 + 4)2 - 2 ? (6 - 3)2
A. 3627
B. 823
C. 1989
D. 387
Answer: D
Mathematics
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Find Dxy.sinh (tan 9x)
A. 9 cosh(tan 9x) sec2 9x
B. 
C. - 9 cosh(tan 9x) sec2 9x
D. cosh(tan 9x) sec2 9x
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Test the series for convergence or divergence.
 Figure 3.png)
Mathematics
Match the function to its graph.y = -tan x
A. 
B. 
C. 
D. 
Mathematics
Use the quadratic formula to solve the equation.x2 + 3x - 28 = 0
A. {- 7, 4} B. {7, 4} C. {7, -4} D. {-28, 0}
Mathematics