Question 453070
Determine the larger root of the following equation:
log(z) + log(z + 19) = 2 log(z + 2). 
:
log(z(z+19)) = 2 log(z+2)
:
log(z^2+19z) = log((z+2)^2)
therefore
z^2 + 19z = (z+2)^2
z^2 + 19z = z^2 + 4z + 4
z^2 - z^2 + 19z - 4z = 4
15z = 4
z = {{{4/15}}}
z = .267 is the only root