Two marks example problems VII — task. Mathematics State Board, Class 9.

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Find whether

$x$ and

$y$ are rational or irrational in the following.

(i)

$a = \sqrt{75}$ ,

$b = \sqrt{3}$ ;

$x = ab$ ,

$y = \frac{a}{b}$

(ii)

$a = \sqrt{18}$ ,

$b = \sqrt{3}$ ;

$x = ab$ ,

$y = \frac{a}{b}$

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