Question

solve the equation — log (10x+5)- log (x-4)=2​

Answer 1

log a -log b = log (a/b)

$log( \frac{10x + 5}{x - 4} ) = 2$

if the base of log 10 then,

$100 = \frac{10x + 5}{x - 4}$

$100x - 400 = 10x + 5$

$90x = 405$

$x = 45$

I hope it help you ❤️

Answer 2

Answer:

Here base of log is not mention so we take base of log is 10.

If you have any doubt about answer then you can verify it by putting value of x in equation.

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