5^{-3x-1}=25

解答

5^{- 3 x - 1} = 25

x = - 1

求解步骤

5^{- 3 x - 1} = 25

使用指数运算法则

- 3 x - 1 = 2

解

- 3 x - 1 = 2 : x = - 1

x = - 1

x^{l o g_{10} (x)} = 100

3^{x} = \frac{1}{729}

lo g_{7} (2^{5 x}) = 3

7^{x - 5} = 4 9^{x}

8 1^{\frac{x}{4}} = \frac{1}{37}