Fix the AI's math mistake and explain why 練習問題Factor x² + 7x + 12. Learning path / Course list / Math Test Grade 3 Prep Previous and next lessons in this course Previous lesson: Math Test Grade 3: 5-question challenge Next lesson: Math Test Grade 3: step up Math Test Grade 3 Prep: related lessons Math Test Grade 3: step up Fix the AI's math mistake and explain why Math Test Grade 3: 5-question challenge