Evaluate log of 10^-7

$\log (10^{- 7})$

Step 1

Use logarithm rules to move $- 7$ out of the exponent.

$- 7 \log (10)$

Step 2

Logarithm base $10$ of $10$ is $1$ .

$- 7 \cdot 1$

Step 3

Multiply $- 7$ by $1$ .

$- 7$

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