Question

alguém que saiba resolver pfvr?
preciso com urgência!​

Answer 1

a)

$\mathrm{log_{5}( \dfrac{125}{5} ) = log_{5}(25) = log_{5}( {5}^{2} ) = 2 \times 1 = \mathbf{2}}$

b)

$\mathrm{log_{2}(32 \times 256) = log_{2}(32) + log_{2}(256) = 5 + 8 = \mathbf{13}}$

c)

$\mathrm{log_{5}( {625}^{3} ) = 3 \times log_{5}(625) = 3 \times log_{5}( {5}^{4} ) = 3 \times 4 \times 1 = \mathbf{12}}$