English Medium Class 9 - CBSE Question Bank Solutions for Mathematics

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

Evaluate of the following: 

`(10.4)^3`

Evaluate of the following: 

 (598)³

Evaluate of the following: 

(99)³

Evaluate of the following:

 111³ − 89³

Evaluate of the following:

 46³+34³

Evaluate of the following:

104³ + 96³

Evaluate of the following:

93³ − 107³

If \[x + \frac{1}{x} = 3\], calculate  \[x^2 + \frac{1}{x^2}, x^3 + \frac{1}{x^3}\] and \[x^4 + \frac{1}{x^4}\]

Find the value of 27x³ + 8y³, if 3x + 2y = 14 and xy = 8

Find the value of 27x³ + 8y³, if  3x + 2y = 20 and xy = \[\frac{14}{9}\]