Question

aceste doua exerciții va rog!!! vreau ca exercițiile sa fie corecte!!! Dau coroana!!! ​

Answer 1

II

a)

2^2005+2^2003+2^2001=

2^2001(2^4+2^2+1)=

2^2001(16+4+1)=

2^2001*21

b)

7^5+7^4+7^3=

7^3(7^2+7^1+1)=

7^3(49+7+1)=

7^3*57

c)

x^7+x^6+x^5=

x^5(x^2+x^1+1)

d)

7y^4+3y^3+2y^2=

y^2(7y^2+3y+2)

III

a)

(3^x)^4*3^3=3^27 /:3^3

(3^x)^4=3^24

x*4=24 /:4

x=6

b)

(7^5)^x=(7^3)^10

5*x=3*10

5x=30 /:5

x=6

c)

(10^x)^4*10000=(10^8)^5

(10^x)^4*10^4=10^40 /:10^4

(10^x)^4=10^36

x*4=36 /:4

x=9