Question

please Tell this above Question​

Answer 1

Answer:

plz put the another option also

Answer 2

Answer:

Step-by-step explanation:

$\frac{5+\sqrt{7} }{5-\sqrt{7} } \\\\=\frac{(5+\sqrt{7})(5+\sqrt{7} ) }{(5-\sqrt{7})(5+\sqrt{7 }) } \\\\=\frac{25+7+10\sqrt{7} }{25-7} \\\\=\frac{32+10\sqrt{7} }{18} \\\\=\frac{32}{18} +\frac{10\sqrt{7} }{18} \\\\\bf =\frac{16}{9} +\frac{5\sqrt{7} }{9} =a-b\sqrt{7} \ ( given)\\\\ On \ comparison \ we \ get\\\\a=\frac{16}{9} \ and \ b=-\frac{5}{9}$