Efectuati:27:3^2-2^6:32
b)5^2-4^2-3^2;
c)(4+3)^2-4^2-3^2;
d)19-2^2×[4×9:(3×2)];
e)(3^2-2^3):(6^2-7×5);
f)(4^3-23^0):3^2+2^2×8;
g)(2^2-3)^100+5:[3^2-4×(3^1-3^0)]×1^2013;
h)21^2-2×{11^2+21:(2-1)+2×[1+2^3×(1+2)+2^4-2^1]}.
DAU CORONITA!!!

a) 27 : 3² - 2⁶ : 32 = 27 : 9 - 32 : 32 = 3 - 1 = 2

b) 5² - 4² - 3² = 25 - 16 - 9 = 9 - 9 = 0

c) ( 4 + 3) ² - 4² - 3² = 7² - 16 - 9 = 49 - 25 = 24

d) 19 - 2² x [ 4 x 9 : ( 3 x 2 ) ] = 19 - 4 x ( 36 : 6 ) = 19 - 4 x 6 = 19 - 24 = - 5

e) ( 3² - 2³ ) : ( 6² - 7 x 5 ) = ( 9 - 8 ) : ( 36 - 35 ) = 1 : 1 = 1

f) ( 4³ - 23⁰ ) : 3²+ 2² x 8 = ( 64 - 1 ) : 9 + 4 x 8 = 63 : 9 + 32 = 7 + 32 = 39

g) ( 2² - 3 ) ¹⁰⁰ + 5 : [ 3² - 4 x ( 3¹ - 3⁰ ) x 1 ²⁰¹³ = ( 4 - 3 )¹⁰⁰ + 5 : [ 9 - 4 x ( 3 - 1) ] x1 = 1 ¹⁰⁰ + 5 : ( 9 - 4 x 2 ) x 1 = 1 + 5 : ( 9 - 8 ) x 1 = 1 + 5 : 1 x 1 = 1 + 5 = 6

h) 21² - 2 x { 11² + 21 : ( 2 - 1) + 2 x [ 1 + 2³ x ( 1 + 2 ) + 2⁴ - 2¹] } =

= 441 - 2 x [ 121 + 21 : 1 + 2 x ( 1 + 8 x 3 + 16 - 2 ) ] =

= 441 - 2 x [ 121 - 21 + 2 x ( 1 + 24 + 14 ) ] =

= 441 - 2 x ( 100 + 2 x 39 ) =

= 441 - 2 x ( 100 + 78 ) =

= 441 - 2 x 178 =

= 441 - 356 =

= 85