Question

0,2^4-x = 3125 * ⁴√125

Answer 1

0,2=1/5=5⁻¹
$(5^{-1})^{4-x}=5^{5}cdot 5^{ frac{3}{4}} \ \ 5^{x-4}=5^{ frac{23}{4}} \ \ x-4= frac{23}{4} \ \ x=9 frac{3}{4}$