Find the product.(x + 12)(x3 + 2x - 9)
A. x4 + 12x3 + 2x2 + 33x + 108
B. x4 + 2x2 - 9x + 12
C. x4 + 12x3 + 2x2 + 15x - 108
D. x3 + 14x2 + 15x - 108
Answer: C
Mathematics
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At what points is the given function continuous?f(x, y) = 
A. All (x, y) satisfying x - y ? 0
B. All (x, y) such that x ? 
and x ? -2
C. All (x, y) such that x ? 0
D. All (x, y)
Mathematics
Multiply.6821(369)
A. 2,517,049 B. 2,515,949 C. 2,526,949 D. 2,516,949
Mathematics
Find the indicated probability.You are dealt two cards successively (without replacement) from a shuffled deck of 52 playing cards. Find the probability that both cards are black.
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations.x - y + z = 0x + y + z = 2x + y - z = 10
A. {(5, -4, 1)} B. ? C. {(-4, 5, 1)} D. {(5, 1, -4)}
Mathematics