Factor the polynomial completely using grouping.4x2 + 12x + 9
A. (4x + 3)(x + 3)
B. (2x - 3)(2x - 3)
C. (2x + 3)(2x + 3)
D. prime
Answer: C
Mathematics
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Factor completely.-80y2 - 36y - 4
A. (5y + 1)(-16y - 4) B. (-20y - 4)(4y + 1) C. -4(5y - 1)(4y - 1) D. -4(5y + 1)(4y + 1)
Mathematics
Solve for y.y - 4(x + 10) = 2 + 2y
A. y = -4x - 42 B. y = 4x + 38 C. y = -4x + 42 D. y = 4x + 42
Mathematics
For the given matrix A, find k such that Nul A is a subspace of ?k and find m such that Col A is a subspace of ?m. A = 
A. k = 2, m = 2 B. k = 5, m = 5 C. k = 2, m = 5 D. k = 5, m = 2
Mathematics
Use the graph to find the intervals on which it is increasing, decreasing, or constant.
A. Decreasing on (-?, 0]; increasing on [0, ?) B. Decreasing on (-?, ?) C. Increasing on (-?, ?) D. Increasing on (-?, 0]; decreasing on [0, ?)
Mathematics