Question

Решите,пожалуйста,срочно

Answer 1

3) $( \sqrt{6} + \sqrt{3} )* \sqrt{12} -2 \sqrt{6}* \sqrt{3} =( \sqrt{2*3}+ \sqrt{3} ) * \sqrt{12} -2 \sqrt{6*3}= \\ \\ = \sqrt{3} *( \sqrt{2}+1 )* \sqrt{2*6}- \sqrt{3}*2* \sqrt{6} = \\ \\ = \sqrt{3} * \sqrt{6} *( (\sqrt{2}+1 )* \sqrt{2} -2)= \sqrt{3*3*2}*(2+ \sqrt{2}-2 )= \\ \\ =3 \sqrt{2}* \sqrt{2} =3*2=6$