f log10 5 + log10 (5x + 1) = log10 (x + 5) + 1, then x is equal to:Choices:- 1 3 5
Question
f log10 5 + log10 (5x + 1) = log10 (x + 5) + 1, then x is equal to:
Choices:
- 1
- 3
- 5
Solution
To solve the equation, we first use the property of logarithms that states log(a) + log(b) = log(ab).
So, we can rewrite the equation as:
f log10(5*(5x + 1)) = log10(x + 5) + 1
Then, we can remove the log from both sides of the equation by raising 10 to the power of each side:
10^(f log10(5*(5x + 1))) = 10^(log10(x + 5) + 1)
This simplifies to:
5*(5x + 1) = 10*(x + 5)
Solving this equation for x gives:
25x + 5 = 10x + 50
Subtracting 10x from both sides gives:
15x + 5 = 50
Subtracting 5 from both sides gives:
15x = 45
Finally, dividing both sides by 15 gives:
x = 3
So, the solution to the equation is x = 3.
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