Question

Помогите пожалуйста решить эти примеры

Answer 1

1) lg8 + lg125= lg(8*125) = lg1000 = 3

2) log2(6) - log2(6/32) = log2(6/(6/32)) = log2(32) = 5

3) log3(5) - log3(135) = log3(5/135) = log3(1/27) = -3

4) 2log2(7) - log2(49) = 2log2(7) - log2(7²) = 2*log2(7) - 2*log2(7) = 0

5) log9(3) + log9(243) = log9(3*243) = log9(729) = 3