Question

Упростить выражения
$(1 - \sqrt{2} )(1 + \sqrt{2)}$
$( \sqrt{2} + \sqrt{3} )^{2}$​

Answer 1

Ответ:

Объяснение:

$(1-\sqrt{2})(1+\sqrt{2})=1^2-(\sqrt{2})^2=1-2=-1$

$(\sqrt{2}+\sqrt{3})^2=(\sqrt{2})^2+2(\sqrt{2}*\sqrt{3})+(\sqrt{3})^2=2+2(\sqrt{2*3})+3=5+2\sqrt{6}$