Răspuns:
Explicație pas cu pas:
a. a+b-c=0,5+1,25-0,5=1,25
(a-c)-b=-1,25
a+b+c=2,25
b-a-c=1,25-1=0,25
b. a+b-c=2√2+3√2+√2=6√2
(a-c)-b=3√2-3√2=0
a+b+c=2√2+3√2-√2=4√2
b-a-c=3√2-2√2+√2=2√2
c. a+b-c=√2+3√3+√2-√3-4√3=2√2-2√3=2(√2-√3)
(a-c)-b=√2+3√3-4√3-√2+√3=0
a+b+c=√2+3√3+√2-√3+4√3=2√2+6√3
b-a-c=√2-√3-√2-3√3-4√3=-8√3
