Đặt \(a = {\log _{15}}3\). Hãy biểu diễn \({\log _{25}}15\) theo a.
A. \({\log _{25}}15 = \frac{3}{{5\left( {1 - a} \right)}}\)
B. \({\log _{25}}15 = \frac{5}{{3\left( {1 - a} \right)}}\)
C. \({\log _{25}}15 = \frac{1}{{2\left( {1 - a} \right)}}\)
D. \({\log _{25}}15 = \frac{1}{{5\left( {1 - a} \right)}}\)
A. \({\log _{25}}15 = \frac{3}{{5\left( {1 - a} \right)}}\)
B. \({\log _{25}}15 = \frac{5}{{3\left( {1 - a} \right)}}\)
C. \({\log _{25}}15 = \frac{1}{{2\left( {1 - a} \right)}}\)
D. \({\log _{25}}15 = \frac{1}{{5\left( {1 - a} \right)}}\)