Advanced MathEasyAdding the same binomial three times
Advanced Math practice question
Which of the following is equivalent to (x + 2) + (x + 2) + (x + 2)?
- A. 3x + 6Correct
- B. x + 6
- C. 3x + 2
- D. x³ + 8
Answer: A. 3x + 6
Three copies of x make 3x, and three copies of 2 make 6.
Why the other answers are wrong
- B. x + 6
- The x's must be added too.
- C. 3x + 2
- The 2's must be added too.
- D. x³ + 8
- Adding is not the same as multiplying.
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