Factor the four-term polynomial by grouping.15x4 - 10x2 + 6x2 - 4
A. (5x4 + 2)(3x - 2)
B. (5x2 + 2)(3x2 - 2)
C. (15x2 - 2)(x2 + 2)
D. (5x2 - 2)(3x2 + 2)
Answer: B
Mathematics
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Find the derivative.y = 
+ 6 sec x
A. y ' = - 
+ 6 tan2x
B. y ' = - 
- 6 csc x
C. y ' = - 
+ 6 sec x tan x
D. y ' = 
- 6 sec x tan x
Mathematics
Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them.-6x + 4y = 24 3x - 2y = -12
A. x = -4, y = 1 B. Inconsistent C. x = -5, y = 1 D. x = -4, y = 0
Mathematics
Find the exact value of y, or state that y is undefined.y = sin-1 
A. - 
B. 
C. 
D. 
Mathematics
Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse with major axis from (-1, 1) to (9, 1); minor axis from 
to 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics