Nature of Roots of a Quadratic Equation

Author:M L Aggarwal
10th CBSE
IMPORTANT

Important Questions on Nature of Roots of a Quadratic Equation

MEDIUM
IMPORTANT

In the quadratic equation kx2-6x-1=0, determine the values of k for which the equation does not have real roots.

MEDIUM
IMPORTANT

Determine the value(s) of p for which quadratic equation 2x2+3x+p=0 has real roots.

HARD
IMPORTANT

If -2 is a root of the quadratic equation 3x2+7x+p=0, find the values of k for which the roots of the equation x2+k4x+k-1+p=0 are equal.

MEDIUM
IMPORTANT

Find the non-zero value of k, for which the quadratic equation 3k+1x2+2k+1x+1=0 has equal roots. Hence, find the roots of the equation.

MEDIUM
IMPORTANT

Find the value(s) of k for which following equation has equal roots: x2+k2x+k-1+2=0

MEDIUM
IMPORTANT

Find the value(s) of k for which following equation has equal roots: kxx-25+10=0

MEDIUM
IMPORTANT

Find the value(s) of k for which following equation has equal roots: kx3x+10+25=0

MEDIUM
IMPORTANT

Find the value(s) of k for which following equation has equal roots: kxx-3+9=0

HARD
IMPORTANT

Find the value(s) of k for which given equation has equal roots: k-12x2+2k-12x+2=0

MEDIUM
IMPORTANT

Find the value(s) of k for which given equation has equal roots: y2+k2=2k+1y

MEDIUM
IMPORTANT

Find the value(s) of k for which given equation has equal roots: 9x2-3kx+k=0

MEDIUM
IMPORTANT

Find the value(s) of k for which given equation has equal roots: 4x2+kx+3=0

MEDIUM
IMPORTANT

Find whether the equation has real roots; if real roots exist, find them: -2x2+3x+2=0

 

MEDIUM
IMPORTANT

Find whether the equation has real roots; if real roots exist, find them: 8x2+2x-3=0

 

MEDIUM
IMPORTANT

Find the values of k for which kx5x-6+9=0 has two equal roots.

MEDIUM
IMPORTANT

Find the values of k for which x2-21+3kx+73+2k=0 has two equal roots.

MEDIUM
IMPORTANT

Find the values of k for which k-4x2+2k-4x+4=0 has two equal roots.

MEDIUM
IMPORTANT

Find the values of k for which k2x2-22k-1x+4=0 has equal roots.

EASY
IMPORTANT

Find the roots of 2x2-3x+5=0 using the quadratic formula if the roots exist.

MEDIUM
IMPORTANT

Find the discriminant of the equation and hence find the nature of the roots. Also, find them if they are real: 4x2+7x+2=0