What is simplify-log_{10}(2.5*10^{-9}) ?

The solution to simplify-log_{10}(2.5*10^{-9}) is -log_{10}(2.5)+9

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simplify-log_{10}(2.5*10^{-9})

simplify

- lo g_{10} (2.5 \cdot 1 0^{- 9})

- lo g_{10} (2.5) + 9

Decimal Notation

8.60205 \dots

Solution steps

- lo g_{10} (2.5 \cdot 1 0^{- 9})

Apply log rule:

lo g_{c} (ab) = lo g_{c} (a) + lo g_{c} (b)

lo g_{10} (2.5 \cdot 1 0^{- 9}) = lo g_{10} (2.5) + lo g_{10} (1 0^{- 9})

= - (lo g_{10} (2.5) + lo g_{10} (1 0^{- 9}))

Apply log rule:

lo g_{a} (x^{b}) = b \cdot lo g_{a} (x)

lo g_{10} (1 0^{- 9}) = - 9 lo g_{10} (10)

= - (lo g_{10} (2.5) - 9 lo g_{10} (10))

9 lo g_{10} (10) = 9

= - (lo g_{10} (2.5) - 9)

Distribute parentheses

= - (lo g_{10} (2.5)) - (- 9)

Apply minus-plus rules

- (- a) = a, - (a) = - a

= - lo g_{10} (2.5) + 9

- lo g_{10} (2 \cdot 1 0^{- 7})

3 ln (x) + 2 ln (y) - \frac{1}{2} ln (x + y)

ln (x) - ln (\frac{y}{x})

ln (x + y) + ln (x - y) - 2 ln (z)

lo g_{e} (4 x)

What is simplify-log_{10}(2.5*10^{-9}) ?
The solution to simplify-log_{10}(2.5*10^{-9}) is -log_{10}(2.5)+9