English Medium Class 9 - CBSE Question Bank Solutions

Explain the meaning of the term True class limits.

Define cumulative frequency distribution.

Explain the difference between a frequency distribution and a cumulative frequency distribution.

If \[x - \frac{1}{x} = - 1\]  find the value of  \[x^2 + \frac{1}{x^2}\]

Find the cube of the following binomials expression :

\[\frac{1}{x} + \frac{y}{3}\]

Find the cube of the following binomials expression :

\[\frac{3}{x} - \frac{2}{x^2}\]

Find the cube of the following binomials expression :

\[2x + \frac{3}{x}\]

Find the cube of the following binomials expression :

\[4 - \frac{1}{3x}\]

If a − b = 4 and ab = 21, find the value of a³ −b³

If \[x + \frac{1}{x} = 5\], find the value of \[x^3 + \frac{1}{x^3}\]

If \[x - \frac{1}{x} = 7\], find the value of \[x^3 - \frac{1}{x^3}\].

If \[x - \frac{1}{x} = 5\], find the value of \[x^3 - \frac{1}{x^3}\]

If  \[x^2 + \frac{1}{x^2}\], find the value of \[x^3 - \frac{1}{x^3}\]

If \[x^2 + \frac{1}{x^2} = 98\] ,find the value of \[x^3 + \frac{1}{x^3}\]

Evaluate of the following:

(103)³

Evaluate the following:

 (98)³

Evaluate of the following:

 (9.9)³