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```
If x 2 +3x+3=0 and ax 2 +bx+1=0 ,(a,b belong to rational) have a common root, then value of (3a+b) is equal to : (A) 1/3 (B) 1 (C) 2 (D) 4

```
2 years ago

Arun
25768 Points
```							1st equation has D 0hence it has both roots imaginary Hence both equations have oth roots commonso1/a = 3/b =3/1a = 1/3b = 1hencea/b = 1/3
```
2 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