Two mark exercise problems VI — task. Mathematics State Board, Class 9.

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1. Find

$x^3 - y^3$ , if

$x - y = 5$ and

$xy = 14$ .

Answer:

$x^3 - y^3 =$

2. If

$a + \frac{1}{a} = 6$ , then find the value of

$a^3 + \frac{1}{a^3}$ .

Answer:

$a^3 + \frac{1}{a^3} =$

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