Determine whether A = B, A ? B, B ? A, A ? B, B ? A, or if none of these applies.A = {6, 7, 8}B = {x 
}
A. A ? B, B ? A, and A = B
B. None of these
C. A = B
D. A ? B, B ? A, and A = B
Answer: A
Mathematics
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A. 3a2 - 2c2 B. 9a2 - 12ac - 4c2 C. 9a2 + 12ac - 4c2 D. 9a2 - 4c2
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Simplify.64 + 19
A. 83 B. 84 C. 73 D. 82
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An expression that occurs in calculus is given. Factor completely.(2x + 1)2 + 3(2x + 1) - 4
A. 2x(2x + 1) B. 2x - 1 C. 2x - 6 D. 2x(2x + 5)
Mathematics
Find the length s. Round the answer to three decimal places.
A. 3.77 ft B. 9.549 ft C. 2.618 ft D. 7.54 ft
Mathematics