Combine like terms whenever possible.-4x9 + 4x5 - 6x3 + 13x9 - 11x5
A. 374x
B. 22x17
C. 9x9 - 7x5 - 6x3
D. Not possible
Answer: C
Mathematics
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A. 
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C. - 2
D. - 
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Solve the differential equation.cos x 
+ y sin x = sin x cos x
A. y = cos x ln 
+ C cos x
B. y = cos x ln 
+ C cos x
C. y = cot x + C cos x
D. y = sin x ln 
+ C sin x
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Find the equation from the graph.
A. y = 
x
B. y = -3x
C. y = 3x
D. y = - 
x
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Find the missing factor.21x2 + 13x - 20 = (7x - 5)( )
A. 4x + 3 B. 3x - 4 C. 4x - 3 D. 3x + 4
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