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Advanced Math / Equivalent expressions Difficulty: Easy

Which expression is equivalent to $12 x cubed minus 5 x cubed$ ?

$7 x Superscript 6$

$17 x cubed$

$7 x cubed$

$17 x Superscript 6$

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Explanation

Choice C is correct. The given expression shows subtraction of two like terms. The two terms can be subtracted as follows: $12 x^{3} - 5 x^{3} = (12 - 5) x^{3}$ , or $7 x cubed$ .

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.