Question

8. Calculati: dau coroana plus 30 puncte​

Answer 1

Răspuns:

Explicație pas cu pas:

a) (1/2)^2+(1/2)^3-(1/2)^4=(1/4)+(1/8)-(1/16)=(4+2-1)/16=5/16

c) (1/2)^(-2)+(1/2)^(-1)-(1/2)^0=1:(1/2)^(2)+1:(1/2)^1-1=2^2+2^1-1=4+2-1=5

e) (-3/5)^2-(3/5)^1+(-3/5)^0=9/25-3/5+1=(9-15+25)/25=19/25

g) (-4/7)^2-(4/7)^2=16/49-16/49=0