solve the logarithmic equation for x. if there are no answers, enter null. round your answer to two decimal…

solve the logarithmic equation for x. if there are no answers, enter null. round your answer to two decimal places, if necessary. log(x + 1) - log(x + 2) = log(1/x)
Answer
Explanation:
Step1: Apply log quotient rule
Using (\log a - \log b=\log\frac{a}{b}), rewrite left side: (\log\left(\frac{x + 1}{x + 2}\right)=\log\left(\frac{1}{x}\right))
Step2: Remove logs (since (\log a=\log b\Rightarrow a = b))
Set (\frac{x + 1}{x + 2}=\frac{1}{x}), cross - multiply: (x(x + 1)=x + 2)
Step3: Expand and simplify
Expand left side: (x^{2}+x=x + 2), subtract (x + 2) from both sides: (x^{2}-2 = 0)
Step4: Solve quadratic equation
(x^{2}=2), so (x=\pm\sqrt{2}). But for (\log(x + 1)), (\log(x + 2)), (\log\left(\frac{1}{x}\right)) to be defined:
- (x+1>0\Rightarrow x>- 1)
- (x + 2>0\Rightarrow x>-2)
- (\frac{1}{x}>0\Rightarrow x>0)
So (x=\sqrt{2}\approx1.41) (reject (x =-\sqrt{2}) as it doesn't satisfy (x>0))
Answer:
(1.41)