Math Problem Statement

write: \log _{:}\left[\frac{x\left(x+6\right)}{\left(x+5\right)^3}\right] as a sum and/or difference of logs

Solution

To express the logarithm log[x(x+6)(x+5)3]\log \left[\frac{x(x+6)}{(x+5)^3}\right] as a sum and/or difference of logs, we use the logarithmic properties:

  1. Logarithm of a product: log(ab)=log(a)+log(b)\log(ab) = \log(a) + \log(b)
  2. Logarithm of a quotient: log(ab)=log(a)log(b)\log\left(\frac{a}{b}\right) = \log(a) - \log(b)
  3. Logarithm of a power: log(an)=nlog(a)\log(a^n) = n\log(a)

Now, let's apply these rules step by step:

log[x(x+6)(x+5)3]\log \left[\frac{x(x+6)}{(x+5)^3}\right]

Step 1: Apply the quotient rule

log[x(x+6)(x+5)3]=log(x(x+6))log((x+5)3)\log \left[\frac{x(x+6)}{(x+5)^3}\right] = \log(x(x+6)) - \log((x+5)^3)

Step 2: Apply the product rule to the numerator

log(x(x+6))=log(x)+log(x+6)\log(x(x+6)) = \log(x) + \log(x+6) Thus, the expression becomes: log(x)+log(x+6)log((x+5)3)\log(x) + \log(x+6) - \log((x+5)^3)

Step 3: Apply the power rule to the denominator

log((x+5)3)=3log(x+5)\log((x+5)^3) = 3\log(x+5) Now the full expression is: log(x)+log(x+6)3log(x+5)\log(x) + \log(x+6) - 3\log(x+5)

Thus, the expression log[x(x+6)(x+5)3]\log \left[\frac{x(x+6)}{(x+5)^3}\right] can be written as: log(x)+log(x+6)3log(x+5)\log(x) + \log(x+6) - 3\log(x+5)


Do you want more details or have any questions about the process?

Here are 5 related questions for practice:

  1. Expand log[y(y+2)(y+3)4]\log \left[\frac{y(y+2)}{(y+3)^4}\right] as a sum and/or difference of logs.
  2. Rewrite log(2x35x+1)\log \left(\frac{2x^3}{5x+1}\right) using logarithmic properties.
  3. Simplify log(a2b3c4)\log \left(\frac{a^2b^3}{c^4}\right) as a sum and/or difference of logs.
  4. Use properties of logarithms to simplify log(zz2+1)\log \left(\frac{z}{z^2+1}\right).
  5. Expand log[(x+1)(x2)(x24)2]\log \left[\frac{(x+1)(x-2)}{(x^2-4)^2}\right].

Tip: Always remember to apply the logarithm properties carefully in the correct order: quotient, product, and power rules!

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Math Problem Analysis

Mathematical Concepts

Logarithms
Algebraic Manipulation
Logarithmic Properties

Formulas

Logarithm of a product: \log(ab) = \log(a) + \log(b)
Logarithm of a quotient: \log\left(\frac{a}{b}\right) = \log(a) - \log(b)
Logarithm of a power: \log(a^n) = n\log(a)

Theorems

Properties of Logarithms

Suitable Grade Level

Grades 9-12