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```
(5x+7y+9z)(8y+11z-3x)+(7xy+9zy+8yx+6xz+3yz)+(6xyz+7yzx+4zxy)

```
3 years ago

Arun
25768 Points
```							On multiplying = 40xy + 55xz -15x² +56y² +77yz - 21xy + 72yz+ 99z² - 27xz +7xy + 9yz + 8yx +6xz+3yz + 6xyz+ 7yzx + 4zxy = - 15x² + 56 y² +99z² + 34xy + 161 yz  +34 xz + 17 xyz. Hope it helps
```
3 years ago
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### Course Features

• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions