Question

Ex 3 va rog foarte repede am 10 min la dispozitie
Dau 98 de puncte

Answer 1

3)

a)  ( 5² - 2⁵ : 2 ) : 3 - 1²⁰¹⁹ =

= ( 25 - 2 ⁽ ⁵ ⁻ ¹ ⁾  ) : 3 - 1 =

= ( 25 - 2⁴ ) : 3 - 1 =

= ( 25 - 16 ) : 3 - 1 =

= 9 : 3 - 1 =

= 3 - 1 =

= 2

_____________________

b)    ( 3² x 2⁶ - 2³ x 6 ) : 12 - 2³ = 36

= [ ( 3 x 2 )² x 2⁴ - 2³ x 6 ) : 12 - 8 =

=  ( 6² x 2⁴ - 2³ x 6 ) : 12 - 8 =

= (6 x 2³ ) x ( 6 x 2 - 1 ) : 12 - 8 =

= ( 6 x 8 ) x 11 : 12 - 8 =

= 48 x 11 : 12 - 8 =

= 44 - 8 =

= 36

_________________

c)    ( 7⁴ - 7³ ) : ( 7² - 7 ) - 2³ x 5 = 9

= 7³ ( 7 - 1 ) : 7 ( 7 - 1 ) - 8 x 5 =

= 7² - 40 =

= 49 - 40 =

= 9