Question

22.Calculează:
a) [(3,4 - 1,3)2 : 3,5 +0,723] · 0,7-0,23 : 2;
b) 7 • {8 + 9. (0,5 +0,2. (3,5 + 6:4)]}.
va rog!!!:((​

Answer 1

Răspuns:

Salut

[(3,4-1,3)2:3,5+0,723]•0,7-0,23:2

= (2,1:3,5+0,723)•0,7-0,115

= (5,6+0,723)•0,7-0,115

= 6,323•0,7-0,115

= 4,4261-0,115

= 4,3111

7•{8+9•[0,5+0,2•(3,5+6:4)]}

= 7•{8+9•[0,5+0,2•(3,5+1,5)]}

= 7•[8+9•(0,5+0,2•5)]

= 7•[8+9•(0,5+1)]

= 7•(8+9•1,5)

= 7•(8+13,5)

= 7•21,5

= 150,5

Sper ca te-am ajutat!!!