tinh nhanh neu co the :
a) 125 .(-72).(25) .(-2)^2.(-1)2n
b)-36.19-36.(-199)
c)27.(15-6)-15.(27-6)
d)-18.17+18.(-96)-18.(-13)
e) (-5)^3-26:(-2)_[-3^3+(4-7)^2]
tinh nhanh neu co the :
a) 125 .(-72).(25) .(-2)^2.(-1)2n
b)-36.19-36.(-199)
c)27.(15-6)-15.(27-6)
d)-18.17+18.(-96)-18.(-13)
e) (-5)^3-26:(-2)_[-3^3+(4-7)^2]
b, -36 . 19 – 36 . (-199)
= 7127, 81
c,27.(15-6)-15.(27-6)
= -72
d,-18.17+18.(-96)-18.(-13)
=-1512,17
e, chịu òi