Question

On si. Plifiying (√5+√7) Squire

Answer 1

$( { \sqrt{5} + \sqrt{7} })^{2} \\ \\ = ( { \sqrt{5} })^{2} + ( { \sqrt{7} })^{2} + 2 \sqrt{5} \sqrt{7} \\ \\ = 5 + 7 + 2 \sqrt{35} \\ \\ = 12 + 2 \sqrt{35}$