Factor completely.x2 + 13xy + 42y2
A. x(x + 13y + 42y2)
B. (x - 6y)(x - 7y)
C. (x + 6y)(x + 7y)
D. (x + 6y)(x - 7y)
Answer: C
Mathematics
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Solve the differential equation.x
= 
- 6y, x > 0
A. y = x6(sin x + C), x > 0 B. y = x6(cos x + C), x > 0 C. y = x-6(sin x + C), x > 0 D. y = x-6(cos x + C), x > 0
Mathematics
Simplify completely.
A. 
B. 
C. 
D. 
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Solve the problem.How many different amounts of money can you pay if you use four coins including dimes and quarters?
A. 6 amounts B. 3 amounts C. 4 amounts D. 5 amounts
Mathematics
Perform the indicated operation for the given f(x) and g(x).f(x) = x2 - 9x - 1, g(x) = 
Find (f ? g)(x).
A. x2 - 9x
B. 
C. x - 9
+ 25
D. x - 9
- 1
Mathematics