Which expression is equivalent to ?
Correct answer: C
Explanation
Choice C is correct. The given expression shows subtraction of two like terms. The two terms can be subtracted as follows: , or .
Choice A is incorrect and may result from conceptual or calculation errors.
Choice B is incorrect. This is the result of adding, not subtracting, the two like terms.
Choice D is incorrect and may result from conceptual or calculation errors.
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