Question

Am nevoie de rezolvarea acestor exerciții
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Answer 1

Răspuns:

12. a) 512

b) 26

c) 294

d) 2059

e) 224

f) 3^20

13. a) 0

b) 3

c) 25

d) 7^7

e) 1

f) 7

g) 2

h) 1

14. b) 1

c) 576

d) 0

e) 4

f) 0

Explicație pas cu pas:

* voi folosi ^ când scriu la o putere

12. a) 8^15:8^12=8^(15-12)=8^3=512

b) 13^31:13^30+13=13+13=26

c) 7^29:7^26-7^2=7^(29-26)-7^2=7^3-7^2=343-49=294

d) 7^17:7^13-7^3+13^0=7^(17-13)-7^3+1=7^4-7^3+1=7^3(7-1)+1=7^3*6+1=343*6+1=2058+1=2059

e) (11+4)^22:15^20-15^0=15^22:15^20-1=15^2-1=225-1=224

f) (42:14)^2*9^18:27^6=3^2*(3^2)^18:(3^3)^6=3^2*3^36:3^18=3^(2+36):3^18=3^38:3^18=3^(38-18)=3^20

13. a) (2^4)^7-2^28=2^(4*7)-2^28=2^28-2^28=0

b) (3^5)^4:3^19=3^(5*4):3^19=3^20:3^19=3

c) (5^8)^7:(5^53*5)=5^56:5^54=5^2=25

d) (7^7)^7:(7^77:7^(7*5))=7^49:(7^77:7^35)=7^49:7^42=7^7

e) (13^8)^13:(13^26)^4=13^104:13^104=1

f) 7^13^2:(7^42)^4=7^169:7^168=7

g) 2^7^2:(2^8)^6=2^49:2^48=2

h) 3^8^2:3^4^3=3^64:3^63=1

14. b) 3^20*2^20-6^23:6^3=(3*2)^20-6^20=6^20-6^20=1

c) 2^18*12^18:(6^16*4^16)=(2*12)^18:(6*4)^16=24^18:24^16=24^2=576

d) 75^38:25^38-(3^19)^2=(75:25)^38-3^38=3^38-3^38=0

e) 26^27:13^27:2^5^2=(26:13)^27:2^25=2^27:2^25=2^2=4

f) 10^64:2^64-5^4^3=(10:2)^64-5^64=5^64-5^64=0

Sper că înțelegi! Succes!

Answer 2

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