Răspuns:
9)a.(16*12^10-4*12^10):12^11=12^10*(16-4):12^11=12^10*12:12^11=12^11:12^11=1
b.15^2-(14*15+15):15^2=15^2-15*(14+1):15^2=15^2-15*15:15^2=15^2-1=225-1=224
c.10^3*85-10^3*61-3000=10^3*85-10^3*61-3*10^3=10^3*(85-61-3)=10^3*21=21*1000=21000
d.5^11-(6*5^10-2*5^10)=5^11-5^10*(6-2)=5^11-5^10*4=5^10*(5-4)=5^10*1=5^10
Explicație pas cu pas:
