# One root of x3+x2-2x-1=0 lies between

1.  -2 and -3

2.  0 and 1

3.  1 and 2

4.  2 and 3

4

1 and 2

Explanation :
No Explanation available for this question

# If α,β,γ,δ are the roots of x4-x3-7x2+x+6=0 then α4+β4+γ4+δ4=

1.  79

2.  89

3.  99

4.  109

4

99

Explanation :
No Explanation available for this question

# The equation whose roots are the squares of the roots of x4+3x+8=0 is

1.  x4-16x2-9x-64=0

2.  x4+16x2-9x-64=0

3.  x4+16x2-9x+64=0

4.  x4-16x2+9x-64=0

4

x4+16x2-9x+64=0

Explanation :
No Explanation available for this question

# If α,β,γ are the roots of x3+ax2+bx+c=0 then

1.  ab+3c

2.  ab-3c

3.  3c-ab

4.  3c+ab

4

3c-ab

Explanation :
No Explanation available for this question

# If the sum of two roots of the equation x3-3x2-16x+k=0 then k=

1.  24

2.  36

3.  -36

4.  48

4

48

Explanation :
No Explanation available for this question

# I.The roots of 5x3-8x2+7x-4=0 are 1,-3,18/5 II.The roots of 15x3-23x2+9x-1=0 are 1,1/3,1/5

1.  Only I is true

2.  Only II is true

3.  both I and II are true

4.  Neither I nor II true

4

Only II is true

Explanation :
No Explanation available for this question

# If 2,3 are roots of 2x3+mx2-13x+n=0 then the other root is

1.  4

2.  5/2

3.  -5/2

4.  3

4

-5/2

Explanation :
No Explanation available for this question

# The transformed equation of x4+4x3+2x2-4x-2=0 by eliminating second term is

1.  x4+4x2+1=0

2.  x4+4x2-1=0

3.  x4-4x2+1=0

4.  x4-2x2+1=0

4

x4-4x2+1=0

Explanation :
No Explanation available for this question

# If α,β,γ are the roots of the equation x3-x+2=0 then the equation whose roots are αβ+(1/γ), βγ+(1/α),γα+(1/ β) is

1.  2y3+y2+1=0

2.  2y3-y2+1=0

3.  y3+y2+1=0

4.  2y3+y2-1=0

4

2y3+y2-1=0

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  -1

4.  2

4