A
B
C
D
Explanation
Correct answer: A.
Choice A is correct. Since is a common term in the original expression, like terms can be added: . Distributing the constant term yields .
Desmos solution:
Note: Use the listed values to compare the solved expression with choice A's expression; the two printed lists match.
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice B
Choice B is incorrect and may result from not distributing the negative signs in the expressions within the parentheses.
Choice C
Choice C is incorrect and may result from not distributing the negative signs in the expressions within the parentheses and from incorrectly eliminating the term.
Choice D
Choice D is incorrect and may result from incorrectly eliminating the term.