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[tex]1.-|2x+1|+3*|-2x-1|-2*|2x+1|=?\\
2. \sqrt{2x} -1,41x-|1- \sqrt{2} |x=?[/tex]


Răspuns :

[tex]-|2x+1|+3|-2x-1|-2|2x+1|=2|2x+1|-2|2x+1|=0 \\ \\ \sqrt{2}x-1,41x-|1- \sqrt{2}|x= \\ 1~\boxed{<}~ \sqrt{2}|^2 \\ 1~\boxed{<}~2 \rightarrow |1- \sqrt{2}|= \sqrt{2}-1 \\ \sqrt{2}x-1,41x-x( \sqrt{2}-1)= \\ \sqrt{2}x-1,41x-x \sqrt{2}+x= x-1,41x=-0,41x[/tex]