(25^4)/(5^{5y)}=125^y

解答

\frac{2 5 ^{4}}{5 ^{5 y}} = 12 5^{y}

y = 1

求解步骤

\frac{2 5 ^{4}}{5 ^{5 y}} = 12 5^{y}

使用指数运算法则

- 5 y + 8 = 3 y

解

- 5 y + 8 = 3 y : y = 1

y = 1

验证解:

y = 1

真

解是

y = 1

5 \cdot \frac{5 ^{5 x}}{2 5 ^{x}} = 25

roo t s t e^{a t}

\frac{324}{327} = e^{10 k}

2 = 0.1 x + e^{0.25 x}

so l v e f or y, x y = e^{x + y}