Advanced MathEasy–MediumSimplifying with two variables
Advanced Math practice question
Which of the following is equivalent to 3(a + b) − 2b?
- A. 3a + bCorrect
- B. 3a + 5b
- C. a + b
- D. 3a − b
Answer: A. 3a + b
3a + 3b − 2b = 3a + b.
Why the other answers are wrong
- B. 3a + 5b
- Adds 2b instead of subtracting.
- C. a + b
- Loses the factor 3 on a.
- D. 3a − b
- 3b − 2b is +b, not −b.
More Advanced Math questions
- Easy–Medium
If f(x) = 2x² − 3, what is f(4)? - Easy–Medium
Which expression is equivalent to (2x³)(3x⁴)? - Easy–Medium
What are the solutions to x² − 16 = 0? - Easy–Medium
Which expression is equivalent to (x + 5)²? - Easy–Medium
For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
What are the solutions to the equation 2(x − 3)² − 32 = 0 ?
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