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Dear experts please solve and answer step by step. plaese help to me
Dear experts    please solve and answer step by step. plaese help to me

```
4 years ago

Ajay
209 Points
```							Let r and 4r be the roots of equation ax2+bx+c = 0.then r+4r = 5r = -b/a and      r*4r = 4r2 = c/a      4*(-b/5a)2 = c/a    4b2 = 25ac is the required condition
```
4 years ago
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### Course Features

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