Perform the indicated operations.(7x2y3 - xy - y2) + (x2y3 + 8xy + 7y2)
A. 8x2y3 + 7xy + 6y2
B. 8x2y3 + 9xy + 8y2
C. 6x2y3 - 9xy - 8y2
D. 7x2y3 + 8xy + 7y2
Answer: A
Mathematics
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Solve the problem.The equation ?2 = tan-1 (?C/G) gives the phase angle of impedance in the parallel portion of a distributed constant circuit. Find ?2 if 
ond, 
and 
A. 89.7° B. 1.5° C. 88.5° D. 85.9°
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If possible, find the matrix product of AB.A = 
; B = 
A. AB = 
B. AB = 
C. AB = 
D. AB = 
Mathematics
Find the real number solution set of the equation or inequality shown below the graph. y = f(x)
f(x) < 0
A. {-4, -2} B. (-4, -2) C. (-?, -4] ? [-2, ?) D. (-?, -4) ? (-2, ?)
Mathematics
Differentiate.y = 24-x
A. 24-x B. (-ln 24)24-x C. -24-x D. (ln 24)24-x
Mathematics