Explain how you would solve the following equation:
Describe why you may only choose some of the possible roots of any polynomial you reduce the problem to
By using the property of logarithms, simplify the LHS .
Since there is log term on both the sides of the equation, we can take antilog on both sides, simplify and solve the quadratic for x
There are two solutions possible for value of x, one positive the other negative. However notice that in the given question there is a term ln(x). But since log of a number is defined only for x>0, we discard x=-3.
Hence the answer is x=7.