Question

Calculați: a) 4-3-(2-5); c)-3-[(-3)²-5] - (-2²); b)-17-[(5-14): (-3-6)-8] -2; d) 123-31-15-231. ​

Answer 1

Răspuns:

a) 4-3-(2-5)=4-3-(-3)=4-3+3=4

b)-17-[(5-14):(-3-6)-8]-2=-17-[(-9:+9)-8]=-17-(-8)=-17+8=-9

c)-3-[(-3)²-5]-(-2²)=-3-(9-5)-4=-3-4-4=-7-4=-11

d)123-31-15-231=92-15-231=77-231=-154