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`        The value of A for which one zero of 3x2-(1+4A)x+A2+2 may be one-third of the other is:-(a)4(b)33/8(c)17/4(d)31/8`
9 months ago

Arun
22330 Points
```							Dear student Let zeros are x and x/3 Now 4x/3 = (1+4A)/3 Also x²/3 =( A²+ 2)/3 Now you can solve as there are two variables and two equations. I
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9 months ago
SAMBHAV MISHRA
36 Points
```							Hey dude I want the proper solution...By the way,just for help ans. is 31/8Solve it properly plz..........
```
9 months ago
PRASHANT KUMAR JHA
35 Points
```							Let the Roots be ‛p' and ‛q’ Thus we have q=p/3 As it's given one root is one-third of the other.  Now Sum of roots (     p+q=(1+4A)/3Or, p+p/3=4p/3=(1+4A)/3 Thus, p=(1+4A)/4 ....(eqn1) Also, product of roots,   p.q=p.p/3=(A^2+2)/3 Or, p^2=A^2+2 Now putting the value of p from eqn1 We have 8A=31Thus A=31/8
```
9 months 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