Question

cat de repede posibil pls​

Answer 1

Răspuns:

b)3^(2n-3)=27⁷:9²

3^(2n-3)=3²¹:3⁴

3^(2n-3)=3¹⁷

2n-3=17

2n=17+3

2n=20

n=20:2

n=10

c)5^(3n+1)=25¹¹

5^(3n+1)=5²²

3n+1=22

3n=22-1

3n=21

n=21:3

n=7

d)7^(n+1):7⁴=49^2^3

7^(n+1):7⁴=49⁸

7^(n-3)=7¹⁶

n-3=16

n=16+3

n=19

e)10^(2n+1):5^(2n+1)=8⁹

2^(2n+1)+5^(2n+1):5^(2n+1)=2²⁷

2^(2n+1)×1=2²⁷

2^(2n+1)=2²⁷

2n+1=27

2n=26

n=26:2

n=13