Question

1) 0,8√225-0,5√1,21 =...
2) 2-3√25÷36=.....
3) (0,5√20)²

ПОМОГИТЕ!!

Answer 1

1)0.8*15-0.5*1.1=12-0.55=11.45
2) 2-3*5/6=2-10=-8
3)0.25*20=5