Question

срочно пожалуйста...............​

Answer 1

Ответ:

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

$= -2+\sqrt{2}-\sqrt{2}+1 = -1$

$3) \sqrt{(\sqrt{7}-2 )^2} +\sqrt{(\sqrt{7} -5)^2} = |\sqrt{7}-2 |+|\sqrt{7}-5 |= -(\sqrt{7} -2)-(\sqrt{7} -5) =$

$= -\sqrt{7}+2-\sqrt{7} +5 = -\sqrt{14} +7$

$4) \sqrt{(\sqrt{15}-2 )^2}+ \sqrt{(\sqrt{15}-3 )^2} = |\sqrt{15}-2 |+|\sqrt{15}-3 | = -(\sqrt{15}-2 )-(\sqrt{15}-3 ) =$

 $= -\sqrt{15}+2-\sqrt{15}+3 = -\sqrt{30} +5$