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The number of values of the pair (a,b) for which a(x+1)^2 + b{( – x^2) – 3x – 2} + x + 1 = 0 is an identity in x, is 1)0 2)1 3)2 4)Infinite
The number of values of the pair (a,b) for which a(x+1)^2 + b{( – x^2) – 3x – 2} + x + 1 = 0 is an identity in x, is1)02)13)24)Infinite

```
2 years ago

2074 Points
```							the eqn is:(x+1)[ax+a-b(x+2)+1]=0or x(a-b)+a-2b+1=0or a=b and a-2b+1=0so a=b=1option 2) is correct
```
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