Question

ПОМОГИТЕ 2 И 3 !!!!!!!!!​

Answer 1

${( \sqrt{12} - \sqrt{3} )}^{2} = 12 - 12 + 3 = 3$

$( \sqrt{77} - \sqrt{15} )( \sqrt{77} + \sqrt{15} ) = { \sqrt{77} }^{2} - { \sqrt{15} }^{2} = 77 - 15 = 62$