[tex](-2XYZ ^{4} ) ^{2} =\ \textgreater \ (-2XYZ) ^{4*2} =\ \textgreater \ (-2XYZ) ^{6} [/tex] numere negative la puteri pozitive sunt numere pozitive =>[tex]( 2XYZ) ^{6} =\ \textgreater \ 2XYZ*2XYZ*
2XYZ*2XYZ*2XYZ*2XYZ=\ \textgreater \
[/tex][tex]=\ \textgreater \ 12X ^{6} Y ^{6} Z ^{6} [/tex]
[tex](1,5XY^{3} ) ^{3} =\ \textgreater \ (1,5XY) ^{3*3} =\ \textgreater \ (1,5XY) ^{9} =\ \textgreater \ [/tex][tex]1,5XY*1,5XY*1,5XY
*1,5XY*1,5XY*1,5XY
*1,5XY*
[/tex][tex]1,5XY*1,5XY=\ \textgreater \ 13,5X^{9} Y ^{9} [/tex]
