Answer:
All real numbers.
Explanation:
If both sides, when simplified, equals each other, the answer will be "all real numbers". Simplify the left side. Distribute 2 to all terms within the parenthesis:
2(x + 1) = (2 * x) + (2 * 1) = 2x + 2
2x + 2 = 2x + 2 ∴ A) All real numbers is your answer.
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