Question

please tell.............​

Answer 1

refer to the attachment.

Answer 2

$= \frac{3 \sqrt{5} - 2 \sqrt{3} }{7 \sqrt{2} + 2 \sqrt{3} } \\ = \frac{3 \sqrt{5} - 2 \sqrt{3} }{7 \sqrt{2} + 2 \sqrt{3} } \times \frac{3 \sqrt{5} + 2 \sqrt{3} }{7 \sqrt{2} - 2 \sqrt{3} } \\ = \frac{ {(3 \sqrt{5)} }^{2} - {(2 \sqrt{3)} }^{2} }{ {(7 \sqrt{2} )}^{2} - {(2 \sqrt{3)} }^{2} } \\ = \frac{35 - 12}{98 - 12} \\ = \frac{23}{86} \\ = 0.26744186$