Question

Dau coroana. Toate aceste exercitii. Va roggg E URGENT ​

Answer 1

Răspuns:

3.

a)9^3 - 2^4 + 400 =

729 - 16 + 400 =

1113

b)64•25 + 225•144 - 1 =

1600 + 32400 - 1 =

33999

c)21^17 - 21^17 = 0

d)24^18 : 24^16 = 24^2 = 576

4.

2^38(2^2 + 2 + 1) : 7 =

2^38 • 7 : 7 =

2^38 =

(2^19)^2 pătrat perfect

5.

u(5^129)=5

5^1=5

5^2=25

5^3=125...

u(7^26)=9

7^1=7

7^2=49

7^3=343

7^4=2401

_________

7^5=16807

26:4=6 rest 2

5+9=14 =>ultima cifră este 4.

6.

0•2^0 + 1•2^1 + 1•2^2 + 0•2^3 + 1•2^4 + 0•2^5 + 1•2^6 =

0+2+4+0+16+0+64=

86