Add or subtract as indicated. Simplify, if necessary.
x - 
x
A. 
x
B. 
x
C. 
x
D. 
x2
Answer: B
Mathematics
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Solve the problem.The number of vertices in a tree with 49 edges is
A. 50. B. 249. C. 49. D. 48. E. none of these
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Verify the identity.sin 4x = (4 sin x cos x)(2 cos2 x - 1)
What will be an ideal response?
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Find the indicated matrix.Let A = 
. Find 4A.
A. 
B. 
C. 
D. 
Mathematics
Multiply. Express your answer in standard form.(8 - 3i)2
A. 64 - 48i + 9i2 B. 73 - 48i C. 55 D. 55 - 48i
Mathematics