Explanation
Correct answer: A.
Choice A is correct. Applying the distributive property on the left- and right-hand sides of the given equation yields , or . Subtracting from and adding to both sides of this equation yields . Subtracting from both sides of this equation and then dividing both sides by yields .
Desmos solution:
Enter in Desmos:
Reviewed and rewritten by CookSAT
Why the other choices are wrong
Choice B
Choice B is incorrect. Substituting , , or for in the given equation will result in a false statement. If , the given equation becomes ; if , the given equation becomes ; and if , the given equation becomes . Therefore, the values , , and aren't solutions to the given equation.
Choice C
Choice C is incorrect. Substituting , , or for in the given equation will result in a false statement. If , the given equation becomes ; if , the given equation becomes ; and if , the given equation becomes . Therefore, the values , , and aren't solutions to the given equation.
Choice D
Choice D is incorrect. Substituting , , or for in the given equation will result in a false statement. If , the given equation becomes ; if , the given equation becomes ; and if , the given equation becomes . Therefore, the values , , and aren't solutions to the given equation.