Convert the equation to the standard form for a hyperbola by completing the square on x and y.x2 - y2 - 4x + 4y - 1 = 0
A. (x - 2) 2 - (y - 2) 2 = 1
B. 
- 
= 1
C. (x - 2) 2 + (y - 2) 2 = 1
D. (y - 2) 2 - (x - 2) 2 = 1
Answer: A
Mathematics
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Find the indicated roots.Fourth roots of -16; trigonometric form
A. 1 + i, 1 - i, -1 + i, -1 - i
B. 
+ 
i, 
- 
i, - 
+ 
i, - 
- 
i
C. 8
+ 8
i, 8
- 8
i, -8
+ 8
i, -8
- 8
i
D. 2 + i, 2 - i, -2 + i, -2 - i
Mathematics
Solve the equation.
= 4
A. - 
, 
B. - 
, 
C. 
D. - 
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Find the indicated term by use of the following information. The r + 1 term of the expansion of (a + b)n is given by 
an - r brThe fifth term of (3x + 2y)9
A. 163,296x4y5 B. 326,592x4y5 C. 126x9y4 D. 489,888x9y4
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Use the distributive property to simplify.9(x - 8)
A. x - 72 B. 9x - 8 C. 9x - 17 D. 9x - 72
Mathematics