Write the binomial expansion of the expression.(-3m - 3n)4
A. 81m4 + 5184m3n - 2916m2n2 + 324mn3 - 81n4
B. 81m4 + 5184m3n + 2916m2n2 + 324mn3 + 81n4
C. 81m4 + 324m3n + 486m2n2 + 324mn3 + 81n4
D. 81m4 + 324m3n - 486m2n2 + 324mn3 - 81n4
Answer: C
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Solve and check your solutions.
= 5
A. x = 7 B. x = 2 C. x = 6 D. x = 10
Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).9
+ 9i
A. 18(cos 30° + i sin 30°) B. 18(cos 60° + i sin 60°) C. 18(cos 330° + i sin 330°) D. 18(cos 300° + i sin 300°)
Answer the question or complete the sentence to make a true statement.In order to add -9 and 7, I should begin by finding the of the of -9 and 7.
A. Difference, absolute values B. Sum, opposites C. Difference, additive inverses D. Sum, absolute values
Solve the problem.The formula R = log (a/T) + B is used to find the severity (magnitude) of an earthquake based on the amplitude, a, of the associated seismic wave. If one earthquake has a severity 
on the Richter scale and a second earthquake has a severity 
on the Richter scale, how many times more severe (to the nearest whole number) is the second earthquake than the first?
A. 215 B. 1,000,000,000 C. 3981 D. 3