(2√5+7√6)-(4√5-2√6)=
a) 2√5+7√6-4√5+2√6=
2√5-4√5+7√6+2√6=
-2√5+9√6. asa ramane, nu mai ai ce calcula
b)1√11-4√13-(3√13-2√11)=
1√11-4√13-3√13+2√11=
1√11+2√11-4√13-3√13=
3√11-7√13. la fel, ramane asa
c) 4√2-5√6-(4√2-5√7)=
4√2-5√6-4√2+5√7=
4√2-4√2-5√6+5√7=
-5√6+5√7 .tot asa ramane
cel mai bun raspuns?
4,6√3-3√5+2,6-1√3-1,4√5-4,6√3+1=
4,6√3-1√3-4,6√3-3√5-1,4√5+2,6+1=
3,6√3-4,6√3-3√5-1,4√5+2,6+1=
-1√3-1,6√5+3,6.