Quadratic Equations

IMPORTANT

Quadratic Equations: Overview

This topic covers concepts, such as, Polynomial, Quadratic Equation, Roots of a Quadratic Equation, Solving a Quadratic Equation using Sridharacharya Formula, Conjugate Imaginary Roots of Quadratic Equation & Polynomial Equation etc.

Important Questions on Quadratic Equations

EASY
IMPORTANT

If one root of the quadratic equation ax2+bx+c=0 is equal to nth power of the other root, then the value of acn1n+1+anc1n+1 is equal to

MEDIUM
IMPORTANT

Solution to the trigonometric equation sin2x  5sinx + 4 = 0 is 

MEDIUM
IMPORTANT

Formulate into a mathematical problem to find a number such that when its cube root is added to it, the result is 6.

MEDIUM
IMPORTANT

Find all real numbers satisfying 4x-32x+2+25=0.

EASY
IMPORTANT

If α,β are the roots of the equation x2-7x-4=0, then α3=53α+k. Find the value of k?

EASY
IMPORTANT

Solve the equation 3x+4=x.

MEDIUM
IMPORTANT

A trader bought a number of articles for 1200. Ten were damaged and he sold each of the rest at2 more than what he paid for, thus clearing a profit of 60 on the whole transaction. Find the number of articles he bought.

MEDIUM
IMPORTANT

A piece of cloth costs 175. If the piece were 4 m longer and each metre costs 5 less, the cost would have remains unchanged. How long is the piece?

EASY
IMPORTANT

 The roots of the equation x+3x-2-1-xx=174 are

EASY
IMPORTANT

Subtract the quadratic expression 9x2-11x+5 from 3x2+x-1.

EASY
IMPORTANT

If 6x6-25x5+31x4-31x2+25x-6=0, then sum of all the roots of the equation is

EASY
IMPORTANT

If 1, 1, α are the roots of x3-6x2+9x-4=0 then find α.

EASY
IMPORTANT

If α, β, γ are the roots of 4x3-6x2+7x+3=0 then find aβ+βγ+γα

MEDIUM
IMPORTANT

The number of cubic polynomials P(x) satisfying P(1)=2, P(2)=4, P(3)=6, P(4)=8 is
 

EASY
IMPORTANT

The number of real roots of the polynomial equation x4-x2+2x-1=0 is

EASY
IMPORTANT

If 1, 1, α are the roots of the equation x3-6x2+9x-4, then the value of α is

EASY
IMPORTANT

Find the sum of zeros of the polynomials x2+6x+9=0.

HARD
IMPORTANT

In a class, the total number of boys and girls are in the ratio 4: 3. On one day it was found that 8 boys and 14 girls were absent from the class and that the number of boys was the square of the number of girls. What is the sum of digits of total number of students in the class?

HARD
IMPORTANT

In a class, the total numbers of boys and girls are in the ratio 4: 3. On one day it was found that 8 boys and 14 girls were absent from the class and that the number of boys was the square of the number of girls. What is the sum of digits of total number of students in the class?

MEDIUM
IMPORTANT

In the question, two equations I and II with variables a and b are given. You have to solve both the equations to find the values of a and b.

I. a2  43a + 9 = 0

II. b2  53b + 18 = 0