Question

6 номер хелп:**************

Answer 1

                              Решение:

lg(x+3)=lg1000+lg5^2
lg(x+3)=lg(1000*25)
x+3=25000
x=24997.

Answer 2

Lg(3+x) =3+2lg(5)
lg(x+3) =3+lg(5^2)
lg(x+3) =3+lg(25)
lg(x+3) =3+lg(5^2)
x+3 = e^(3+lg(25))
x+3 = e^3*e^(lg(25))
x+3 = e^3*25
x=25e^3-3