Question

Лаоалататптпттатпьаьаьаьа

Answer 1

$\displaystyle\bf\\\lg8+3\cdot \lg5=\lg8+\lg5^{3} =\lg8+\lg125=\lg(8\cdot 125)=\\\\=\lg1000=\lg10^{3} =3\cdot \underbrace{\lg10}_{1}=3$