Factor completely. If unfactorable, indicate that the polynomial is prime.50a4b - 8b3
A. 2b(5a - 2b)2
B. 2b(5a2 + 2b)(5a2 - 2b)
C. (10a + 4b)(5ab - 2b2)
D. 2b(5a + 2b)2
Answer: B
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What term of the arithmetic sequence is the given number?6, 5.2, 4.4, . . . ;-13.2
A. 24 B. 28 C. 26 D. 25
Simplify.
A. -(x + 4) B. -(x - 4) C. 4x(x + 4) D. x + 4
Write the equation in its equivalent logarithmic form.53 = x
A. log5 3 = x B. logx 5 = 3 C. log3 x = 5 D. log5 x = 3
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
ellipse
center at (
, - 
)
major axis is x'-axis
vertices at (4 + 
, - 
) and (-4 + 
, - 
)
B. ? = 63.4°
x'2 = -16y'
parabola
vertex at (0, 0)
focus at (0, -4)
C. ? = 26.6°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±4)
D. ? = 63.4°
- 
= 1
hyperbola
center at (0, 0)
transverse axis is the x'-axis
vertices at (±4, 0)