Solve. ln(–x + 1) – ln(3x + 5) = ln(–6x + 1) i don't understand: (

On the left side, you can condense the logarithms into one:

Then

From here it's a purely algebraic equation. Multiply both sides by to get

By the quadratic formula,

or about and .

Before we finish, first note that in order for the original equation to make sense, we need to satisfy 3 conditions:

or taken together,

so both solutions found above are valid.