Question

Решите уравнения
1. 5^2x+1=25
2. (4/5)^x2-14x=(4/5)^-45

Answer 1

Объяснение:

1.

5^(2x + 1) = 5²

2x + 1 = 2

2x = 1

x = 1/2

2.

(4/5)^(x² - 14x) = (4/5)^(-45)

x² - 14x = -45

x² - 14x + 45 = 0

x₁ = 5, x₂ = 9, так как 5·9 = 45, 5 + 9 = -(-14)