Question

VA ROG REZOLVATI CELE DOUA EXERCITII AM NEVOIE URGENT DE ELE (22 si 26)

Answer 1

Răspuns:

22.a) -1•(+2)+(-3)•(+4)+(-5)•(+6)=-2+(-12)+(-30)=-44

b)-5•[-4-3•(-2-1)]=-5•[-4-3•(-3)]=-5•(-4+6)=-5•(+2)=-10

c)11•(-2)+(-4)•[-100-4•(-26)]=-22+(-4)•[-100+104]=-22+(-4)•(+4)=-22+(-16)=-38

d)200-7•[(-25+4•7)-3•(11-13)]=200-7•[(-25+28)-3•(-2)]=200-7•(3+6)=200-7•9=200-63=137

e)-2•{-2•[-2•(1753-1748)+1]}=-2•[-2•(-2•5)+1)]=-2•[-2•(-10)+1)]=-2•(+20+1)=-2•(+21)=-42