Question

Please answer it fast. :)​

Answer 1

i think the answer to your question is 30

Answer 2

`~~~(2\sqrt 2 + \sqrt 7)/(2\sqrt 2 -\sqrt 7) + (2\sqrt 2-\sqrt 7 )/(2\sqrt 2+\sqrt 7)\\\\\\=(\sqrt 8 + \sqrt 7)/(\sqrt 8 -\sqrt 7) + (\sqrt 8-\sqrt 7 )/(\sqrt 8+\sqrt 7)\\\\\\=(\left(\sqrt 8 +\sqrt 7\right)^2+\left(\sqrt 8 -\sqrt 7\right)^2 )/(\left(\sqrt 8 -\sqrt 7\right)\left(\sqrt 8 +\sqrt 7\right))\\\\\\`

`=(\left(\sqrt 8+ \sqrt 7 + \sqrt 8 - \sqrt 7 \right)^2 - 2 \left(\sqrt 8 +\sqrt 7\right)\left(\sqrt 8 -\sqrt 7\right))/(\left(\sqrt 8 \right)^2 - \left(\sqrt 7 \right)^2)\\\\\\=(\left(2\sqrt 8 \right)^2 - 2(8-7))/(8-7)\\\\\\=(4 \cdot 8 -2\cdot 1)/(1)\\\\\\=32 -2 \\\\\\=30`