rrrrrrapid va roggggggggg

Răspuns:
Explicație pas cu pas:
a)
a=(1/3+1/2+4/5)×30=(10+15+6x4)/30×30=25+24=49
b) b=(3/3√3-8/2√3+5/5√3):√3/12=(1/√3-4/√3+1/√3):√3/12=-2/√3×12/√3=
=-8
(√a+b)^2020=(√49-24)=(7-8)^2020=(-1)^2020=1
(√a+b)^2020=(-7-8)^2020=(-15)^2020