M:N:MC:8
Exam
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Skill
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Which of the following is equal to
(Note: )
Select an Answer
74
122
74 + 154i
122 + 154i
View Correct Answer
Choice D is correct. Applying the distributive property to multiply the binomials yields the expression The note in the stem of the question reminds students that
therefore
Substituting this value into the expression gives the student
and combining like terms results in
Choice A is not the correct answer. This answer may result from a combination of errors. The student may not correctly distribute when multiplying the binomials, multiplying only the first terms together and the second terms together. The student may also think that
Choice B is not the correct answer. This answer may result from a misunderstanding of how to multiply binomials. The distributive property is not applied correctly and the student may only multiply the first two terms together and the last two terms together.
Choice C is not the correct answer. This answer results from misapplying the statement
Students must apply the distributive property on two complex binomials and then simplify the result.