If p x = x - b x - c a - b a - c + x - c x - a b - c b - a + x - a x - b c - a c - b , then for all real values of x , P x equals

x - a x - b x - c a - b b - c c - a

Which of the following is divisible by x 2 - y 2 , ∀ x ≠ y ?

x n - y n x 2 n + 1 + y 2 n + 1 ∀ n ∈ N

x n - y n x m + y m ∀ m , n ∈ N

HARD

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The minimum value of the expression $4 x^{2} + 2 y^{2} + 6 x + 5 y + 5$ is, for $\forall x, y \in R$

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Important Questions on Quadratic Equations

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

The number of ordered pairs

(x, y)

of integers satisfying

x^{3} + y^{3} = 65

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

Let

P

be a non-zero polynomial such that

P (1 + x) = P (1 - x)

for all real

x

and

P (1) = 0

. Let

m

be the largest integer such that

{(x - 1)}^{m}

divides

P (x)

for all such

P (x)

. Then,

m

equals

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

x + 2

is a factor of

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

a + b + c = 1, a b + b c + c a = 2

and

a b c = 3,

then the value of

a^{4} + b^{4} + c^{4}

is equal to:

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

The number of real roots of the equation,

e^{4 x} + e^{3 x} - 4 e^{2 x} + e^{x} + 1 = 0

is:

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

The value of

a

for which

a (a + 2) + (a^{2} + 3 a + 2) x + (a^{2} + a - 2) x^{2} = 0

has more than two roots, is:

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

Let $f (x) = x^{6} - 2 x^{5} + x^{3} + x^{2} - x - 1$ and $g (x) = x^{4} - x^{3} - x^{2} - 1$ be two polynomials. Let $a, b, c$ and $d$ be the roots of $g (x) = 0$ . Then, the value of

$f (a) + f (b) + f (c) + f (d)$ is

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

p (x) = \frac{(x - b) (x - c)}{(a - b) (a - c)} + \frac{(x - c) (x - a)}{(b - c) (b - a)} + \frac{(x - a) (x - b)}{(c - a) (c - b)}

, then for all real values of

x, P (x)

equals

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

Which of the following is divisible by

x^{2} - y^{2}, \forall x \neq y ?

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

The number of cubic polynomials

P (x)

satisfying

P (1) = 2, P (2) = 4, P (3) = 6, P (4) = 8

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

Let

f (x)

be a polynomial of degree

3

such that

f (k) = - \frac{2}{k}

for

k = 2, 3, 4, 5 .

Then the value of

52 - 10 f (10)

is equal to _____ .

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

Let

p (x)

be a quadratic polynomial such that

p (0) = 1 .

p (x)

leaves remainder

4

when divided by

x - 1

and it leaves remainder

6

when divided by

x + 1

then:

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

f (x) = 2 x^{3} + {m x}^{2} - 13 x + n

and

2, 3

are roots of the equation

f (x) = 0

, then the values of

m

and

n

are -

HARD

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

Let

a, b, c

be non-zero real roots of the equation

x^{3} + a x^{2} + b x + c = 0 .

Then

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

2 + \sqrt{5}, 1

are roots of the cubic equation given by

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

A man standing on a railway platform notices a train moving at uniform speed took

21

seconds to cross the platform which is

88

meters long and that it took

9

seconds to pass him. Then, the length of the train in meters is

MEDIUM

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

The number of integers

x

satisfying

- 3 x^{4} + det [\begin{matrix} 1 & x & x^{2} \\ 1 & x^{2} & x^{4} \\ 1 & x^{3} & x^{6} \end{matrix}] = 0

is equal to

HARD

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

If the sum of the coefficients of all even powers of

x

in the product

(1 + x + x^{2} + \dots + x^{2 n}) (1 - x + x^{2} - x^{3} + \dots + x^{2 n})

61,

then

n

is equal to

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

x + \frac{1}{x} = 5

, then

(x^{3} + \frac{1}{x^{3}}) - 5 (x^{2} + \frac{1}{x^{2}}) + (x + \frac{1}{x})

is equal to

EASY

Mathematics>Algebra>Quadratic Equations>Algebraic Equations and Identities

When driving a car, if you accelerate from rest at a constant rate

a

for an amount of time

t

, the distance

d

travelled is given by the formula

d = \frac{1}{2} a t^{2}

. Rearrange the formula to make

t

the subject.

The minimum value of the expression 4x2+2y2+6x+5y+5 is, for ∀x,y∈R

Important Questions on Quadratic Equations

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The minimum value of the expression $4 x^{2} + 2 y^{2} + 6 x + 5 y + 5$ is, for $\forall x, y \in R$