Lg4+lg25

To combine the logarithms \( \log 4 + \log 25 \), you can use the logarithmic property that states \( \log a + \log b = \log (a \cdot b) \).

So,

\[ \log 4 + \log 25 = \log (4 \cdot 25). \]

Calculating \( 4 \cdot 25 \):

\[ 4 \cdot 25 = 100. \]

Therefore,

\[ \log 4 + \log 25 = \log 100. \]

Since \( \log 100 \) is equal to \( 2 \) (because \( 100 = 10^2 \)), we find:

\[ \log 4 + \log 25 = 2. \]