Advanced MathEasyAdding two polynomials
Advanced Math practice question
Which expression is equivalent to (3x² + 2x) + (x² − 5x)?
- A. 4x² − 3xCorrect
- B. 4x² + 7x
- C. 3x² − 3x
- D. 4x² − 3
Answer: A. 4x² − 3x
Combine like terms: 3x² + x² = 4x² and 2x − 5x = −3x.
Why the other answers are wrong
- B. 4x² + 7x
- This adds 5x instead of subtracting.
- C. 3x² − 3x
- This forgets to add the x² terms.
- D. 4x² − 3
- The x-terms combine to −3x, not −3.
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