English Medium Class 9 - CBSE Question Bank Solutions

Which of the following expression are polynomials? Justify your answer:

`1/(x + 1)`

Which of the following expression are polynomial? Justify your answer:

`1/(2x)`

A binomial can have atmost two terms

Every polynomial is a binomial.

A binomial may have degree 5

Classify the following polynomial as polynomials in one variable, two variables etc.

x² + x + 1

Classify the following polynomial as polynomials in one variable, two variables etc.

y³ – 5y

Classify the following polynomial as polynomials in one variable, two variables etc.

xy + yz + zx

Classify the following polynomial as polynomials in one variable, two variables etc.

x² – 2xy + y² + 1

Write the coefficient of x² in the following:

`pi/6 x + x^2 - 1`

Write the coefficient of x² in the following:

3x – 5

Write the coefficient of x² in the following:

(x – 1)(3x – 4)

Write the coefficient of x² in the following:

(2x – 5)(2x² – 3x + 1)

Give an example of a polynomial, which is monomial of degree 1.

Give an example of a polynomial, which is binomial of degree 20.

Give an example of a polynomial, which is trinomial of degree 2.

Find the value of the polynomial 3x³ – 4x² + 7x – 5, when x = 3 and also when x = –3.

If p(x) = x² – 4x + 3, then evaluate : `p(2) - p(–1) + p(1/2)`

Using suitable identity, evaluate the following:

103³

Using suitable identity, evaluate the following:

101 × 102