# If α,β are the roots of x2-p(x+1)+C=0 then (α+1)(β+1)=

1.  C

2.  C-1

3.  1+C

4.  1-C

4

1+C

Explanation :
No Explanation available for this question

# If x2+4ax+3=0 and 2x2+3ax-9=0 have a common root, then a=

1.

2.  -1

3.  1

4.  0

4

Explanation :
No Explanation available for this question

# If 2+i√3 is a root of the equation x2+px+q=0,then

1.  p=-4,q=7

2.  p=-4,q=-7

3.  p=4,q=-3

4.  p=4,q=7

4

p=-4,q=7

Explanation :
No Explanation available for this question

# If α,β,γ,δ are the roots of the equation 3x4-8x3+2x2-9=0 then

1.  -8/3

2.  8/3

3.  -2/3

4.  2/3

4

2/3

Explanation :
No Explanation available for this question

# If α,β,γ are the roots of x3+x2+x=1=0 then (α-β)2+(β-γ)2+(γ-α)2=

1.  -4

2.  4

3.  -3

4.  3

4

-4

Explanation :
No Explanation available for this question

# If α,β,γ are the roots of x3+ax+b=0 then (α+β)-1+(β+γ)-1+(γ+α)-1=

1.  –(a2/b2)

2.  (a2/b2)

3.  –a/b

4.  a/b

4

a/b

Explanation :
No Explanation available for this question

# The equation whose roots are 2+√3,2-√3,1+2i,1-2i is

1.  x4-6x3+14x2-22x+5=0

2.  x4+6x3+14x2-22x+5=0

3.  x4-7x3+25x2+43x-40=0

4.  x4-7x3-25x2-43x+40=0

4

x4-6x3+14x2-22x+5=0

Explanation :
No Explanation available for this question

# The vertex and focus of a parabola are (0,0) and (0,4) then its directrix is

1.  y+4=0

2.  y+5=0

3.  y+6=0

4.  y+8=0

4

y+4=0

Explanation :
No Explanation available for this question

# Vertex of the parabola x2+12x-9y=0

1.  (-6,-4)

2.  (6,4)

3.  (-6,4)

4.  (6,-4)

4

(-6,-4)

Explanation :
No Explanation available for this question

1.  6√2

2.  10√2

3.  8√2

4.  3√2

4