Question

va roooooggggg ajutatima​

Answer 1

b) 3²ⁿ⁻³ = 3²¹ : 3⁴

3²ⁿ⁻³ = 3²¹⁻⁴

3²ⁿ⁻³ = 3¹⁷

2n-3 = 17

2n = 20

n = 10

c) 5³ⁿ⁺¹ = 5²²

3n+1 = 22

3n = 21

n = 7

d) 7ⁿ⁺¹⁻⁴ = (7²)⁸

7ⁿ⁻³ = 7¹⁶

n-3 = 16

n = 19

e) 10²ⁿ⁺¹ : 5²ⁿ⁺¹ = 8⁹

(10:5)²ⁿ⁺¹ = (2³)⁹

2²ⁿ⁺¹ = 2²⁷

2n+1 = 27

2n = 26

n = 13