Perform the indicated operations and write the result in standard form.(2 + i)2 - (6 - i)2
A. 32 + 16i
B. -48
C. -32 + 16i
D. -32 - 16i
Answer: C
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The period P, in years, of a planet is the time it takes to make a single orbit of the sun. The period is related to the distance D from the sun by the formula
.
A: Neptune is 30 times as far from the sun as Earth. How long does it take Neptune to make a single orbit around the sun?B: The period of Mercury is 88 days. Express the period of mercury in terms of years.C: The Earth is 93 million miles from the sun. Use your answer to part B to determine how far Mercury is from the sun.
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Round your answers to two decimal places if necessary.
?
What will be an ideal response?
Write the improper fraction as a mixed or whole number.
A. 17
B. 124
C. 124
D. 
Solve the system of equations using substitution.
A. x = -2, y = 1; x = -1, y = -2; x = 1, y = -2; x = 2, y = 1 B. x = 1, y = -2; x = 4, y = 13 C. x = -1, y = -2; x = 1, y = -2 D. x = -2, y = 1; x = 2, y = 1
Solve the equation.
+ x = 5
A. ? B. {2, 12} C. {12} D. {2}