Factor the difference of cubes.729 - p3q3
A. (9 - pq)(81 + 9pq + p2q2)
B. (9 + pq)(81 - 9pq + p2q2)
C. (9p - q)(81p2 + 9pq + q2)
D. (9 - pq)3
Answer: A
Mathematics
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Find the sum if it exists.
A. - 
B. 
C. 
D. Does not exist
Mathematics
Write the augmented matrix for the system. Do not solve the system. 6x + 7y + 8z = 63 5x + 3y + 2z = 46 4x + 9y - 2z = 23
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. {(-1, 0)} B. ? C. {(1, 0)} D. {(0, 1)}
Mathematics
Write the sentence as an equation.The difference of -54 and 21 is -75.
A. -54 - 21 = -75 B. -54 - 21 = 75 C. 54 - 21 = 75 D. 54 + 21 = 75
Mathematics