Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Math practice test
Practice Question
Factor the expression completely: -3x - 21
Answer Choices
- A: -3(x+7)
- B: -3(x-21)
- C: -3(x-7)
- D: -3(x+21)
Correct Answer: A
Rationale: Factor: -3x - 21 = -3(x + 7). Verify: -3 * x + (-3) * 7 = -3x - 21. Thus, the correct answer is -3(x+7).