English Medium इयत्ता ९ - CBSE Question Bank Solutions for Mathematics

If each edge of a cube is increased by 50%, the percentage increase in its surface area is

If A1, A2, and A3 denote the areas of three adjacent faces of a cuboid, then its volume is

If l is the length of a diagonal of a cube of volume V, then

If V is the volume of a cuboid of dimensions x, y, z and A is its surface area, then `A/V`

A cube whose volume is 1/8 cubic centimeter is placed on top of a cube whose volume is 1 cm³. The two cubes are then placed on top of a third cube whose volume is 8 cm³. The height of the stacked cubes is

Following expression is polynomial in one variable or not? State reason for your answer.

4x² - 3x + 7

Write the coefficient of x² in the following:-

`2+x^2+x`

Give one example each of a binomial of degree 35, and of a monomial of degree 100.

Write the degree of the following polynomial:-

5x³ + 4x² + 7x

Classify the following as linear, quadratic and cubic polynomial:

x² + x

Use suitable identity to find the following product:

(x + 4) (x + 10) 

Use suitable identity to find the following product:

(x + 8) (x – 10)

Use suitable identity to find the following product:

(3x + 4) (3x – 5)

Use suitable identity to find the following product:

`(y^2+3/2)(y^2-3/2)`

Use suitable identity to find the following product:

(3 – 2x) (3 + 2x)

Evaluate the following product without multiplying directly:

103 × 107

Evaluate the following product without multiplying directly:

95 × 96

Evaluate the following product without multiplying directly:

104 × 96

Factorise the following using appropriate identity:

9x² + 6xy + y² 

Factorise the following using appropriate identity:

4y² – 4y + 1