Change the complex number to rectangular form.(cos 120° + j sin 120°)

A. 0.952 - 0.305j
B. -0.952 - 0.305j
C. 0.866 + 0.500j
D. -0.500 + 0.866j

Answer: D

Mathematics

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A. ln(1 + cosh x) + C
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A. AD B. EC C. BD D. CC E. none of these

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Factor the polynomial using the negative of the greatest common factor.-18x3y2 + 4x3y - 8x2y

A. -2x2y(9xy + 2x - 4) B. 2x2y(-9xy + 2x - 4) C. -2x2y(9xy - 2x + 4) D. -2xy(9x2y - 2x2 + 4x)

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