Question

I
$if x = \frac{7 - 4 \sqrt{3} }{?7 + 4 \sqrt{3} } and y = \frac{7 + 4 \sqrt{3} }{?7 - 4 \sqrt{3} } then find {x}^{2} xy + {y}^{2}$

Answer 1

First rationalise the denominator in both x and y

So we get x=97-56 root 3 and  y=97+56 root 3

a/q you can solve it easily by putting the values

Hope it helps!!!