Factor completely, or state that the polynomial is prime.x4 - 16x2 - 225
A. (x + 5)(x - 5)(x + 3)(x - 3)
B. (x + 5)(x - 5)(x2 + 9)
C. (x - 5)2(x2 + 9)
D. (x2 - 25)(x2 + 9)
Answer: B
Mathematics
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Solve the equation.
- 
= 4
A. r = 
B. r = 
C. r = 
D. r = 
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Solve the problem.Suppose that f and g are continuous and that 
and 
A. -75 B. 39 C. -51 D. -15
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Solve the following system by any appropriate method. If there is no real number solution, so state.x2 + 6y2 = 7x2 - y2 = 1
A. 
, 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
D. no real solution
Mathematics
Convert the units using unit fractions.64 pt = 
qt
A. 256 B. 128 C. 32 D. 16
Mathematics