Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.17x2 - 12xy + 8y2 - 68x + 24y -12 = 0
A. ? = 63.4°
- 
= 1
hyperbola
center at (0, 0)
transverse axis is the x'-axis
vertices at (±4, 0)
B. ? = 26.6°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±4)
C. ? = 63.4°
+ 
= 1
ellipse
center at (
, - 
)
major axis is x'-axis
vertices at (4 + 
, - 
) and (-4 + 
, - 
)
D. ? = 63.4°
x'2 = -16y'
parabola
vertex at (0, 0)
focus at (0, -4)
Answer: C
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Evaluate the root, if possible.- 
A. 11 B. -25 C. -5 D. 5
Express as a single logarithm.logcm + logcn
A. logc(mn)
B. logc
C. logcmn
D. logcm ? logcn
Find the zeros of f(x), given that one zero is k.f(x) = 16x4 - 8x3 + 338x2 - 128x + 1312
k = 4i
A. ±4i, - 
± 
i
B. ±4i, 
± 
i
C. ±4i, - 
± 
i
D. ±4i, 
± 
i