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)•[tex]\frac{1}{22}[/tex]] =
= 6+2•(176,625•[tex]\frac{1}{22}[/tex]) = 6+2•([tex]\frac{1413}{8}[/tex]•[tex]\frac{1}{22}[/tex]) =
= 6+2•[tex]\frac{1413}{176}[/tex] = 6+[tex]\frac{528}{88}+\frac{1413}{88} = \frac{1941}{88}[/tex] ( l-am amplificat pe 6 cu 88 )
Sper că te-am ajutat!
