Question

$if x = \frac{7 - 4 \sqrt{3} }{7 + 4 \sqrt{3} ?} = a + b \sqrt{3 } find value of a and b$

Answer 1

First rationalise the denominator

then, x=(49+48)-56 root 3

           =97-56 root 3

so a=97 and b=-56        (Ans)