Factor.x2 + 6xy + 9y2
A. (x + 3y)2
B. x2 + 6xy + 9y2
C. (x - 3y)2
D. (x + 3y)(x - 3y)
Answer: A
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A. -5 B. 11 C. 10 D. 7
Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has at least 2 siblings?
A. 0.46 B. 0.75 C. 0.25 D. 0.54
Solve the equation.x2 + x + 8 = 0
A. 
B. 
C. 
D. 
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Fill in the blank(s) with the appropriate word(s).