Question

Calculati: a) (225: 9+1024:16-2 la puterea a 3) : 9=
b) (512: 2 la puterea a 6 +2 la puterea a 3) : 2 la puterea a 4
c) [(11 la puterea a 2 + 2 la puterea a 2) : 5-4 la puterea a 2]: 3
d) (196: 14 + 19600) : 7+2 la puterea a 2=
e) (432: 24-4 la puterea a 2) ×9-4 la puterea a 2=

Este urgent!

Answer 1

a)
(225 : 9 + 1024:16 - 2^3) : 9 =

(25 + 64 - 8) : 9 =

(89 - 8) : 9 =

81 : 9 =

9

b) (512 : 2^6 + 2^3) : 2^4 =

(512 : 64 + 8) : 16 =

(8 + 8) : 16 =

16 : 16 =

1

c) [(11^2 + 2^2) : 5 - 4^2] : 3 =

[ ( 121 + 4) : 5 - 16] : 3 =

( 125 : 5 - 16) : 3 =

(25 - 16) : 3 =

9 : 3 =

3


d) (196 : 14 + 19 600) : 7 + 2^2 =

( 14 + 19 600) : 7 + 4 =

19 614 : 7 + 4 =

2 802 + 4 =

2 806

e) (432 : 24 - 4^2) × 9 - 4^2 =

(18 - 16) × 9 - 16 =

2 × 9 - 16 =

18 - 16 =

2

Answer 2

a)

( 225 : 9 + 1 024 : 16 - 2 ³ ) : 9 = 9

= ( 25 + 64 - 8 ) : 9 =

= ( 89 - 8 ) : 9 =

= 81 : 9 =

= 9

b)

( 512 : 2⁶ + 2 ³ ) : 2⁴ = 1

= ( 512 : 64 + 8 ) : 16 =

= ( 8 + 8 ) : 16 =

= 16 : 16 =

= 1

c)

[ ( 11² + 2² ) : 5 - 4 ² ] : 3= 3

= [ ( 121 + 4 ) : 5 - 16 ] : 3 =

= ( 125 : 5 - 16 ) : 3 =

= ( 25 - 16 ) : 3 =

= 9 : 3 =

= 3

d)

( 196 : 14 + 19 600 ) : 7 + 2² = 2 806

= ( 14 + 19 600 ) : 7 + 4 =

= 19 614 : 7 + 4 =

= 2 802 + 4 =

= 2 806

e)

( 432 : 24 - 4² ) x 9 - 4² = 2

= ( 18 - 16 ) x 9 - 16 =

= 2 x 9 - 16 =

= 18 - 16 =

= 2