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use the product rule log A + log B = log (AB)

\[\lg x(x+15) = 2\]

convert 2 to log 100

log x+log (x+15)=log(x(x+15))!!

it just a hint, so that both sides have log's :)

But how do you go from
log(x(x+15)=2.. to x=5?
I can't get that part

got it ?

Yes! Just solved it.. thank you!

yw

I didn't think of doing log 100 to cancel the logs on both sides