Nature of Roots

IMPORTANT

Nature of Roots: Overview

This topic covers concepts, such as, Nature of Roots of a Quadratic Equation, Discriminant of a Quadratic Equation, Two Equal Real Roots of a Quadratic Equation & No Real Roots of a Quadratic Equation etc.

Important Questions on Nature of Roots

EASY
IMPORTANT

Explain the benefits of evaluating the discriminant of a quadratic equation before attempting to solve it. What does its values signifies?

EASY
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Find the value of k for the given quadratic equation, so it has equal roots.

2x2+kx+3=0

EASY
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Find the nature of the roots of the quadratic equations. if real roots exist, find them.

2x2-6x+3=0

EASY
IMPORTANT

Find the nature of the roots of the quadratic equations. If the real roots exist, find them.

3x2-43x+4=0

HARD
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If the equation x2-bx+1=0 does not possess real roots, then

MEDIUM
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If the equation kx2-2kx+6=0 has equal roots, then find the value of k.

MEDIUM
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Find the value of the discriminant of the quadratic equation 2x2-4x+3=0.

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If graph of the quadratic equation lies above x-axis, then the nature of roots are;

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Find the roots of 2x2+2x+3=0

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Find the value of k so that equation x2+5kx+16=0 has no real roots.

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Find the value of k for which quadratic equation has real and distinct roots.
x2-kx+9=0

MEDIUM
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If -5 is one root of quadratic equation 2x2+px-15=0 and roots of quadratic equation px2+x+k=0 is equal, then find the value of k.

EASY
IMPORTANT

If the roots of equation x2-kx+9=0 are real and distinct, then k>_____.

MEDIUM
IMPORTANT

Find the value of k for which quadratic equation has real and distinct roots. Find the maximum integer value of k.
kx2+6x+1

EASY
IMPORTANT

Find the value of k for which quadratic equation has real and distinct roots.
kx2+2x+1=0

MEDIUM
IMPORTANT

Find the value of k in the quadratic equation for which roots are real and equal.
kx2-5x+k=0

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IMPORTANT

Find the sum of values of k in the quadratic equation for which roots are real and equal.
(k+4)x2+(k+1)x+1=0

MEDIUM
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Find the sum of values of k in the quadratic equation for which roots are real and equal.
(k+1)x2-2(k-1)x+1=0

EASY
IMPORTANT

If the value of k=m6 in the quadratic equation for which roots are real and equal, then find the value of m.
2x2+kx+3=0

EASY
IMPORTANT

Find the value of k in the quadratic equation for which roots are real and equal.
x2-2(k+1)x+k2=0