Question

2)comparati:a)5⁸cu2¹⁵+2*4; b)5¹⁴cu3²¹.
3)calculati
a) (5²-2⁵:2):3-1²⁰¹⁹;
b) (3²*2⁶-2⁵*6):12-2⁵; c) (7⁴-7³):(7²-7)-2³•5.
dau 67 de puncte pentru raspunsul corect dar si cu rezolvare

Answer 1

2¹⁵+2*4⁷=2¹⁵+2*(2²)⁷=2¹⁵+2¹⁵=2*2¹⁵=2¹⁶

2¹⁶=4⁸

4⁸ <5⁸ rezulta

2¹⁵+2x4⁷<5⁸

(5²-2⁵:2):3-1²⁰¹⁹=

(5²-2⁵⁻¹):3-1=

(5²-2⁴):3-1=

(25-16):3-1=

9:3-1=

3-1=2

(3²*2⁶-2⁵*6):12-2⁵=

(9*64-32*6):12-32=

(576-192):12-32=

384:12-32=

32-32=0

(7⁴-7³):(7²-7)-2³*5=

(2401-343):42-8*5=

2058:42-40=

49-40=9