Evaluate the factorial expression.

A. 7
B. 0
C. 1
D. 21


Answer: D

Mathematics

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Perform the indicated operations.(3x2 - xy - y2) + (x2 + 7xy + 10y2)

A. 4x2 + 8xy + 11y2 B. 3x2 + 7xy + 10y2 C. 4x2 + 6xy + 9y2 D. 2x2 - 8xy - 11y2

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Find the limit algebraically. (7 - 5x2)

A. -53 B. -173 C. 187 D. -23

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Change the hexadecimal number to binary form. 

A. 11111111 B. 1111110 C. 11111100 D. 11111110 E. 11111011

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Solve the equation.x - x = 4

A. {-120} B. {60} C. {-60} D. {120}

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