Precalculus Examples

$2 \log (x + 3) + 3 \log (x - 7) - 5 \log (x - 2) - \log (x^{2})$

Step 1

Simplify each term.

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Step 1.1

Simplify $2 \log (x + 3)$ by moving $2$ inside the logarithm.

$\log ({(x + 3)}^{2}) + 3 \log (x - 7) - 5 \log (x - 2) - \log (x^{2})$

Step 1.2

Simplify $3 \log (x - 7)$ by moving $3$ inside the logarithm.

$\log ({(x + 3)}^{2}) + \log ({(x - 7)}^{3}) - 5 \log (x - 2) - \log (x^{2})$

Step 1.3

Simplify $- 5 \log (x - 2)$ by moving $5$ inside the logarithm.

$\log ({(x + 3)}^{2}) + \log ({(x - 7)}^{3}) - \log ({(x - 2)}^{5}) - \log (x^{2})$

Step 2

Use the product property of logarithms, $\log_{b} (x) + \log_{b} (y) = \log_{b} (x y)$ .

$\log ({(x + 3)}^{2} {(x - 7)}^{3}) - \log ({(x - 2)}^{5}) - \log (x^{2})$

Step 3

Use the quotient property of logarithms, $\log_{b} (x) - \log_{b} (y) = \log_{b} (\frac{x}{y})$ .

$\log (\frac{{(x + 3)}^{2} {(x - 7)}^{3}}{{(x - 2)}^{5}}) - \log (x^{2})$

Step 4

Use the quotient property of logarithms, $\log_{b} (x) - \log_{b} (y) = \log_{b} (\frac{x}{y})$ .

$\log (\frac{\frac{{(x + 3)}^{2} {(x - 7)}^{3}}{{(x - 2)}^{5}}}{x^{2}})$

Step 5

Multiply the numerator by the reciprocal of the denominator.

$\log (\frac{{(x + 3)}^{2} {(x - 7)}^{3}}{{(x - 2)}^{5}} \cdot \frac{1}{x^{2}})$

Step 6

Combine.

$\log (\frac{{(x + 3)}^{2} {(x - 7)}^{3} \cdot 1}{{(x - 2)}^{5} x^{2}})$

Step 7

Simplify the expression.

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Step 7.1

Multiply ${(x + 3)}^{2}$ by $1$ .

$\log (\frac{{(x + 3)}^{2} {(x - 7)}^{3}}{{(x - 2)}^{5} x^{2}})$

Step 7.2

Reorder factors in $\log (\frac{{(x + 3)}^{2} {(x - 7)}^{3}}{{(x - 2)}^{5} x^{2}})$ .

$\log (\frac{{(x + 3)}^{2} {(x - 7)}^{3}}{x^{2} {(x - 2)}^{5}})$