# The equation formed by the increasing each root of ax2+bx+c=0 by 1 is 2x2+8x+2=0 then

1.  a + b =0

2.  b + c =0

3.  b=c

4.  a =b

4

b=c

Explanation :
No Explanation available for this question

# The set of values of p for which 6 lie between the roots of the equation x2+2(p-3)x+9=0

1.  (3/4, ∞)

2.  (-∞,-3/4)

3.  (-3/4, 3/4)

4.  [-3/4, 3/4]

4

(-∞,-3/4)

Explanation :
No Explanation available for this question

# If α,β,γ are the roots of the equation x3+qx+c=0 the equation whose roots are -α-1,-β-1,-γ-1 is

1.  rx3-qx2+1=0

2.  rx3+qx2+1=0

3.  rx3-qx2-1=0

4.  rx3+qx2+1=0

4

rx3-qx2-1=0

Explanation :
No Explanation available for this question

# I: Maximum value of -5x2+2x+3 is 17/5 II: Minimum value of 3x2-7x+9 is 59/6 at x=-7/6

1.  Only I

2.  Only II

3.  Both I and II

4.  Neither I nor II

4

Neither I nor II

Explanation :
No Explanation available for this question

# The equation whose roots are those of equation x4+x3-x-25=0 with contrary signs

1.  x4-x3+x-25=0

2.  x4+x3+x+25=0

3.  x4+x3+x-25=0

4.  x4+x3-x-25=0

4

x4-x3+x-25=0

Explanation :
No Explanation available for this question

# The equation whose roots are those of xn+xn-2+xn-5+m=0 with contrary signs (n is even as n≥6)

1.  xn-xn-2-xn-5+m=0

2.  xn+xn-2+xn-5+m=0

3.  xn+xn-2-xn-5+m=0

4.  xn-xn-2+xn-5+m=0

4

xn+xn-2-xn-5+m=0

Explanation :
No Explanation available for this question

# If x is real, then the maximum value of expression 7-(2x-3)2 is obtained when x =

1.  0

2.  -3/2

3.  3/2

4.  -2

4

3/2

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.  -7,-5,2

2.  7,-5,-2

3.  5,7,2

4.  5,-7,-2

4

7,-5,-2

Explanation :
No Explanation available for this question

# The minimum value of 2x2+x-1 is

1.  1/4

2.  3/2

3.  -9/8

4.  9/4

4

-9/8

Explanation :
No Explanation available for this question

1.  x+y-9=0

2.  2x+y-13=0

3.  2x-y=0

4.  2x-y+3=0

4