Which expression is equivalent to 12x^3 −5x^3?
Correct answer: C (parsed from the explanation — this source omits an answer key for this item)
Explanation
Choice C is correct. The given expression shows subtraction of two like terms. 3- 3=( - ) 3 3 The two terms can be subtracted as follows: 12x 5x 12 5 x , or 7x . 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. 44 SAT PRACTICE TEST #4 ANSWER EXPLANATIONS SAT ANSWER EXPLANATIONS nnn MATH: MODULE 2
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