Răspuns :
1)
2•(5+√18)-3(2+√8)=
2(5+3√2)-3(2+√8)=
2(5+3√2)-3(2+2√2)=
10+6√2-6-6√2=
(10-6)+(6√2-6√2)=4
2)
|x|<3
-3<x<3
x € (-3,3)
x=-2,-1,0,1,2
2•(5+√18)-3(2+√8)=
2(5+3√2)-3(2+√8)=
2(5+3√2)-3(2+2√2)=
10+6√2-6-6√2=
(10-6)+(6√2-6√2)=4
2)
|x|<3
-3<x<3
x € (-3,3)
x=-2,-1,0,1,2