condense the expression
In(x-5)-4In(x+1) into the logarithm of a single quantity.
In(x-5)-4In(x+1) we have
ln(x -5) - ln(x +1)^4 =
ln [(x - 5) / (x + 1)^4]
I used the folllowing properties, here
b ln a = ln a ^b and ln a - ln b = ln[a / b]
