Question

Vă rog să mă ajutați la ex 8 va rog.​

Answer 1

Răspuns:

a) 5739•4325-4325•5739-5738 = 24821175-24821175-5738 = 0-5738 = -5738

b) (1990+1989•1990):(1990•1991-1990) = (1990+3958110):(3962090-1990) =

= 3960100:3960100 = 1

c) (11+22+33+...+88+99):(11•45) = 495:495 = 1

d) 12+10•(6+14):4-50:25 = 12+10•20:4-50:25 = 12+200:4-50:25 = 12+50-2 = 62-2 = 60

e) 1+22•(32:8-1):6+19870 = 1+22•(4-1):6+19870 = 1+22•3:6+19870 = 1+66:6+19870 =

= 1+11+19870 = 12+19870 = 19882

f) (32-23)•(42-24)•(25-52)•(26-62) = 9•18•(-27)•(-36) = 162•972 = 157464

g) 6+2•[(3•52-22•18:32+3•11):22] = 6+2•[(156-12,375+33)•$\frac{1}{22}$] =

= 6+2•(176,625•$\frac{1}{22}$) = 6+2•($\frac{1413}{8}$•$\frac{1}{22}$) =

= 6+2•$\frac{1413}{176}$ = 6+$\frac{528}{88}+\frac{1413}{88} = \frac{1941}{88}$ ( l-am amplificat pe 6 cu 88 )

Sper că te-am ajutat!