Question

$\frac{5 \times + 2 \sqrt{3} }7 + 4 \sqrt{3 } } = a + b \sqrt{ =3}$
​

Answer 1

frac{(5+2 \sqrt{3})}{(7+ 4 \sqrt{3})}=a-b \sqrt{3} ... \frac{5 \times 7- 5 \times 4 \sqrt{3}+2 \sqrt{3} \times 7-2 ...