Factor the difference of two squares.x4 - 256
A. (x2 + 16)(x + 4)(x - 4)
B. (x2 - 16)(x2 - 16)
C. (x2 + 16)(x2 + 16)
D. prime
Answer: A
Mathematics
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Solve the problem.On our moon, the acceleration of gravity is 1.6 m/sec2. If a rock is dropped into a crevasse, how fast will it be going just before it hits bottom 45 seconds later?
A. 72 m/sec B. -36 m/sec C. 3240 m/sec D. -72 m/sec
Mathematics
Perform the indicated operations and simplify the expression.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the equation by completing the square.x2 + 4x + 13 = 0
A. {-2 ± 
}
B. {-2 ± 3i}
C. {1, -5}
D. {2 ± 3i}
Mathematics
Solve the system of equations. x1 + x2 + x3 = 7 x1 - x2 + 2x3 = 75x1 + x2 + x3 = 11
A. (1, 4, 2) B. (4, 2, 1) C. (4, 1, 2) D. (1, 2, 4)
Mathematics