Factor the trinomial completely.x2 + 5xy - 126y2
A. (x - 14y)(x + 9y)
B. Prime
C. (x + 14y)(x - 9y)
D. (x - 14y)(x + y)
Answer: C
Mathematics
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d2 = 0
A. -3 ± 
B. 3 ± 
C. -3 ± 
D. 3 ± 
Mathematics
Find the angle between u and v in radians.u = -4i + 10j - 9k, v = 9i + 8j - 2k
A. 0.37 B. 1.57 C. 1.39 D. 1.20
Mathematics
Represent the quantity by an integer.a climb of 128 feet down into a subterranean cave
A. -128 B. 128
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The graph of the linear equation y1 is shown on a graphing calculator screen, along with the x-value of the x-intercept of the line. Use the screen to solve the following equation or inequality.y1 < 0
A. (3, ?) B. (1, ?) C. (-?, 1) D. Cannot be determined
Mathematics