Răspuns:
Explicație pas cu pas:
ax(bxc)=(axb)xc
vom trece la calcule:
ax(bxc)=axbxc=(axb)xc=17,25x0,2=1725/100x2/10=1725x2/100x10=3450/1000=3,45
axb+c=17,25+0,2=17,45
axb-c=17,25-0,2=17,05
1725x2=1725+1725=3450
100x10=1000
17,25+ 17,25-
0,25 0.25
______ _________
17,45 17,05