If the roots are x3-9x2+23x-15=0 are in A.P,then the common difference in A.P is

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

If the roots x3-7x2+14x+k=0 are in G.P,then k

1.  -8

2.  8

3.  7

4.  -7

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4
Correct Answer :

-8


Explanation :
No Explanation available for this question

If α,β,γ,δ are the roots of 3x4-8x3+x2-10x+5=0 then the equation whose roots are –α,-β,-γ,-δ is

1.  3x4+8x3+x2+10x+5=0

2.  3x4+8x3+x2-10x+5=0

3.  3x4-8x3+x2-10x+5=0

4.  3x4-8x3+x2+10x+5=0

View Answer  
4
Correct Answer :

3x4+8x3+x2+10x+5=0


Explanation :
No Explanation available for this question

If 5,-7,2 are the roots of lx3+mx2+nx+p=0 then the roots of lx3-mx2+nx+p=0 are

1.  -5,-7,-2

2.  5,7,2

3.  7,-5,2

4.  -7,-5,2

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4
Correct Answer :

7,-5,2


Explanation :
No Explanation available for this question

The equation whose roots are the roots of x4+1=0 each increases by 1 is

1.  x4+1=0

2.  x4-4x3+6x2-4x+2=0

3.  x4+4x3-6x2-4x+2=0

4.  x4-1=0

View Answer  
4
Correct Answer :

x4-4x3+6x2-4x+2=0


Explanation :
No Explanation available for this question

The equation of lowest degree with rational coefficients having a root √3-√5 is

1.  x4+16x2-4=0

2.  x4-12x2+4=0

3.  x4-16x2+4=0

4.  x4+24x2+4=0

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4
Correct Answer :

x4-16x2+4=0


Explanation :
No Explanation available for this question

The transformed equation of x3+6x2+12x-19=0 by eliminating second term is

1.  x3+3x-27=0

2.  x3-3x+27=0

3.  x3+27=0

4.  x3-27=0

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4
Correct Answer :

x3-27=0


Explanation :
No Explanation available for this question

If α,β,γ are the roots of x3+3x2+2x+3=0 then

1.  4/9

2.  5/9

3.  -5/9

4.  -4/9

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4
Correct Answer :

5/9


Explanation :
No Explanation available for this question

If α,β,γ are the roots of x3+px2+qx+r=0 such that α+β=0 then

1.  pr=q

2.  pr+q=0

3.  pq+r=0

4.  pq=r

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4
Correct Answer :

pq=r


Explanation :
No Explanation available for this question

The value if b such that x4-3x3+5x2-33x+b is divisible by x2-5x+6 is

1.  45

2.  48

3.  51

4.  54

View Answer  
4
Correct Answer :

54


Explanation :
No Explanation available for this question
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