Question

logx+log(x+3)=1 what does x=

Answer 1

\[\log_{10}x+\log_{10}(x+3)=1 \]

Answer 2

log x ( x+3) = 1
-> x^2 + 3x = 10
-> x^2 + 3x - 10 = 0
-> ( x + 5) ( x -2) = 0
=> x = 2 ( discard x = -5 < 0)

Answer 3

um were did you get the 10 from

Answer 4

because base 10 -> 10^1 = 10

Answer 5

I'm in hurry!

Answer 6

so whatever the base is you raise that number to whatever it is in the =sign then if that makes sence

Answer 7

Yep, it's from the formula!

Answer 8

Log base a of x = y
=> x = a^y