Question

Rezolvati exercitiile : a) - 15 - ( - 14 ) =
b) - 15 x ( -2 ) - (-4) =
c) $(-2)^{35}$ : $(-2)^{33}$ - $2^{34}$ : $(-2)^{32}$ =
d) - 11 + [ 1 +2 x (1-12)] x [ 81 - 7 x ( - 31 + 40 )] =

Va rog , cat mai repede

Answer 1

a ) -15 - ( -14 ) = 

= -15 + 14

= -1

b ) -15 x ( -2 ) - ( -4 ) = 

= 30 + 4 

= 34

c ) ( -2 )³⁵ : ( -2 )³³ - 2³⁴ : ( -2 )³² = 

= ( -2 )² - 2³⁴ : 2³²

= 4 - 2²

= 4 - 4 

= 0

d ) -11 + [ 1 + 2 x ( 1 - 12 ) ] x [ 81 - 7 x ( -31 + 40 ) ] = 

= -11 + [ 1 + 2 x ( -11 ) ] x [ 81 - 7 x 9 ] 

= -11 + [ 1 - 22 ] x [ 81 - 63 ] 

= -11 - 21 x 18 

= -11 - 378

= -389