EASY
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The nature of the roots of the equation x2 - 5x + 7 = 0 is

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Important Questions on Quadratic Equation

MEDIUM
Let r be a root of the equation x2+2x+6=0 . The value of r+2r+3r+4r+5 is equal to -
HARD
Let α and β be the roots of equation x2-6x-2=0. If an=αn-βn,  n1, then the value of a10-2a82a9 is equal to
MEDIUM

For how many different values of a does the following system have at least two distinct solutions?

ax+y=0

x+a+10 y=0

MEDIUM
If α and β be the roots of the equation  x2-2x+2=0, then the least value of n for which αβn=1 is
HARD
If 8x2x2+7x2=1, x>0, then what is the value of x3+1x3?
HARD
The sum of all real values of x satisfying the equation x2-5x+5x2+4x-60=1 is
HARD
Let α  and  β be the roots of equation px2+qx+r = 0, p0. If p, q, r are in A.P. and 1 α + 1 β = 4 , then the value of α - β is 
EASY

Two equations are given, you have to solve both the equations and get the answer:

i X2-X-6=0

ii Y2-6Y+8=0

MEDIUM

The sum of the roots of the equation, x+1-2log23+2x+2log410-2-x=0, is :

MEDIUM
The sum of all the real roots of the equation x-22+x-2-2=0 is
EASY

Two equations are given, you should solve both the equations and get the answer:

i X2-11X+24=0

ii Y2+14Y-45+0

MEDIUM
If roots of binomial equation 6x2-5x+1=0 are a and β find the sum of their squares.
EASY

Two equations are given, you have to solve both the equations and get the answer:

i 2X2-4X+2=0

ii 2Y2-Y-1=0

EASY
The solutions of x25+3x15-4=0 are
EASY

Two equations are given, you have to solve both the equations and should get the answer:

i X2-15X+56=0

ii Y=64

MEDIUM
Which of the following is not a root of f(x)=x3-11x2+36x-36?
EASY
Let α and β be the roots of the equation, 5x2+6x-2=0. If Sn=αn+βn, n=1, 2, 3, ...., then
HARD
Difference between the corresponding roots of x2+ax+b=0 & x2+bx+a=0 is same and ab, then
MEDIUM

The factors of equation x2+7x+12=0  are-

(A) -3 and -4 

(B) 3 and -4 

(C) -3 and 4 

(D) 3 and 4 

EASY

FInd the factors of (x2 - x - 132):

1. (x - 11) (x -12)
2. (x  + 12) (x -11)
3. (x + 11) (x + 12)
4. (x - 12) (x + 11)