Which of the following expressions is equivalent to the sum of and ?
A
B
C
D
Correct answer: D
Explanation
Choice D is correct. Grouping like terms, the given expressions can be rewritten as . This can be rewritten as .
Choice A is incorrect and may result from adding the two sets of unlike terms, and as well as and , and then adding the respective exponents. Choice B is incorrect and may result from adding the unlike terms and as if they were and and adding the unlike terms and as if they were and . Choice C is incorrect and may result from errors when combining like terms.
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id cb_question_bank:fe8889cf-eeea-4460-83f0-4adf594c98f1 · question 974d33dc · IBN 017096-DC
· JSON