log_{2}(5x+6)=3

解答

lo g_{2} (5 x + 6) = 3

x = \frac{2}{5}

十进制

x = 0.4

求解步骤

lo g_{2} (5 x + 6) = 3

使用对数运算法则

5 x + 6 = 8

解

5 x + 6 = 8 : x = \frac{2}{5}

x = \frac{2}{5}

2 \times lo g_{3} (x) - 23 = 17

2 lo g_{5} (x - 2) = 6

2 (4 x ln (x) + 2 x) = 0

lo g_{2 x} (x^{2} - 3 x + 14) = 3

lo g_{10} (- 2 x) lo g_{10} (6) = 1