Factor by grouping.8x2 + 20xy - 10xy - 25y2
A. (4x + 5y)(2x + 5y)
B. (8x - 5y)(x + 5y)
C. (4x - 5y)(2x + 5y)
D. (4x - 5)(2x + 5)
Answer: C
Mathematics
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Multiply.(x + 1)(-2x - 8)
A. -2x2 - 10x - 10 B. -2x2 - 8x - 10 C. -2x2 - 10x - 8 D. -2x2 - 12x - 8
Mathematics
Find all complex solutions for the equation.
- 
= 
A. {7}
B. {
}
C. {-7}
D. {-14}
Mathematics
Write a system of linear inequalities that has the given graph.
A. 
B. 
C. 
D. 
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Solve the problem.If three cards are drawn without replacement from an ordinary deck, find the probability that the third card is a face card, given that the first card was a queen and the second card was a 5.
A. 
B. 
C. 
D. 
Mathematics