Multiply. Simplify by combining like terms.(x2 - 6xy2)(x2y - 12y)
A. x4y - 6x3y3 - 12x2y + 72xy3
B. x4y - 18x3y3 + 72xy3
C. x4y + 6x3y3+ 12x2y + 72xy3
D. x4y - 18x2y + 72xy3
Answer: A
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Simplify the expression.
A. 
B. 0
C. undefined
D. - 
Perform the calculation. Express the answer in degree-minutes-seconds format.78°26' - 13°50'
A. 64°36' B. 65°24' C. 91°76' D. 65°50'
Factor the trinomial, or state that the trinomial is prime.20x2 + 27x + 9
A. (20x + 3)(x + 3) B. prime C. (4x - 3)(5x - 3) D. (4x + 3)(5x + 3)
Solve the problem.Four boys and three girls are seated, in a row, at random, to watch a play. What is the probability thata) a girl is seated at each end of the row?b) one of the boys is seated in the middle seat?c) boys and girls are seated alternately?
A. a) 
b) 
c) 
B. a) 
b) 
c) 
C. a) 
b) 
c) 
D. a) 
b) 
c) 