Question

equação exponencial

3.0,25 elevado a x=48

Answer 1

$3~.~0,25^x=48\\\\\\0,25^x=\frac{48}{3}\\\\\\\left(\frac{1}{4}\right)^x=16\\\\\\\left(4^{-1}\right)^x=4^2\\\\\\4^{~-1~.~x}=4^2\\\\\\4^{-x}=4^2\\\\\\-x=2\\\\\\\boxed{x=-2}$