Dau coroane va rooooog

Dau Coroane Va Rooooog class=

Răspuns :

b) 63·2-42·2=126-84=42
c)150·150-150·[19·19-(15·15+5·5·5)]=
=22500-150·[361-(225+125)]=
=22500-150·(361-350)=
=22500-150·11=
=22500-1650=
=20850