Advanced Math practice question

Answer: A. 2x + 6

Multiply both terms inside the bracket by 2: 2x + 6.

Why the other answers are wrong

B. 2x + 3

2x + 3 forgets to multiply the 3 by 2.

C. x + 6

x + 6 forgets to multiply the x by 2.

D. 2x + 5

2x + 5 adds 2 to the 3 instead of multiplying.

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