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Popular >

simplify log_{5}(25x^2)

Solution

simplify

lo g_{5} (25 x^{2})

Solution

2 + 2 lo g_{5} (x)

Solution steps

lo g_{5} (25 x^{2})

Factor the number:

25 = 5^{2}

= lo g_{5} (5^{2} x^{2})

Apply log rule:

lo g_{a} (x y) = lo g_{a} (x) + lo g_{a} (y)

lo g_{5} (5^{2} x^{2}) = lo g_{5} (5^{2}) + lo g_{5} (x^{2})

= lo g_{5} (5^{2}) + lo g_{5} (x^{2})

Apply log rule:

lo g_{a} (a^{b}) = b

lo g_{5} (5^{2}) = 2

= 2 + lo g_{5} (x^{2})

Apply log rule

lo g_{a} (x^{b}) = b \cdot lo g_{a} (x), assuming x > 0

lo g_{5} (x^{2}) = 2 lo g_{5} (x)

= 2 + 2 lo g_{5} (x)

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Frequently Asked Questions (FAQ)

What is log_{5}(25x^2) ?
The solution to log_{5}(25x^2) is 2+2log_{5}(x)