Question

Plz solve this question ​

Answer 1

Answer:

refer the above attachment

Answer 2

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$= \frac{7}{3 - 2 \sqrt{2} }$

$= \frac{7}{3 - 2 \sqrt{2} } \times \frac{3 + 2 \sqrt{2} }{3 + 2 \sqrt{2} }$

$= \frac{7(3 + 2 \sqrt{2}) }{ {(3)}^{2} - {(2 \sqrt{2} )}^{2} }$

$= \frac{7(3 + 2\sqrt{2}) }{9 - ({2 }^{2} \times { \sqrt{2} }^{2}) }$

$= \frac{7(3 + 2\sqrt{2} )}{9 - (4 \times 2)}$

$= \frac{7(3 + 2 \sqrt{2} )}{9 - 8}$

$= \frac{7(3 + 2 \sqrt{2} )}{1}$

$= 7(3+2 \sqrt{2})$