Question

please answer fast please answer fast ​

Answer 1

$( \sqrt{3} + \sqrt{7} ) {}^{2}$

$( \sqrt{3} ) {}^{2} + ( \sqrt{7} ) {}^{2} + 2 \times \sqrt{3} \times \sqrt{7}$

$3 + 7 + 2 \sqrt{21}$

$10 + 2 \sqrt{21}$