Question

repede va roog!!!!!!!!!!!!!!!!

Answer 1

b)
3^(2n-3)=(3³)^7:(3²)²
 3^(2n-3)=3^21:3^4
3^(2n-3)=3^17   
2n-3=17
2n=20
n=10
c)
5^(3n+1)=(5²)^11
5^(3n+1)=5^22
3n+1=22
3n=21
n=7
d)
7^(n+1-4)=(7²)^8
7^(n-3)=7^16
n-3=16
n=19
e)
(10:5)^(2n+1)=(2³)^9
2^(2n+1)=2^27
2n+1=27
2n=26
n=13
^-putere

Answer 2

Iti trimit imediat si rezolvarea la ex.16